<PAGE>   1
 
================================================================================
 
                UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D. C. 20549
                                ---------------
 
                                  FORM 10-K/A
                               AMENDMENT NO. 1 TO
(MARK ONE)
[X]   ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE
      ACT OF 1934
 
                  FOR THE FISCAL YEAR ENDED DECEMBER 31, 1996
 
                                       OR
 
[ ]   TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
     SECURITIES EXCHANGE ACT OF 1934
 
                         FOR THE TRANSITION PERIOD FROM
                               --------------- TO
                 ---------------COMMISSION FILE NUMBER 0-21126
 
                                S3 INCORPORATED
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)
 
<TABLE>
<S>                                                  <C>
                  DELAWARE                                            77-0204341
        (STATE OF OTHER JURISDICTION                     (I.R.S. EMPLOYER IDENTIFICATION NO.)
      OF INCORPORATION OR ORGANIZATION)
 
       2801 MISSION COLLEGE BOULEVARD,
           SANTA CLARA, CALIFORNIA                                    95052-8058
  (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)                            (ZIP CODE)
</TABLE>
 
       REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE: (408) 588-8000
 
        SECURITIES REGISTERED PURSUANT TO SECTION 12(B) OF THE ACT: NONE
 
          SECURITIES REGISTERED PURSUANT TO SECTION 12(G) OF THE ACT:
                         COMMON STOCK, $.0001 PAR VALUE
 
     Indicate by check mark whether the Registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the past 12 months (or for such shorter period that the Registrant
was required to file such reports), and (2) has been subject to such filing
requirements for the past 90 days.  Yes [X]  No [ ]
 
     Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to the
best of the Registrant's knowledge, in definitive proxy or information
statements incorporated by reference to Part III of this Form 10-K or any
amendment to this Form 10-K.  [ ]
 
     The aggregate market value of voting stock held by non-affiliates of the
Registrant was approximately $808,253,556 as of March 7, 1997, based upon the
closing price on the Nasdaq National Market reported for such date. This
calculation does not reflect a determination that certain persons are affiliates
of the Registrant for any other purpose.
 
     48,985,064 shares of the Registrant's Common Stock, $.0001 par value, were
outstanding at March 7, 1997.
 
                      DOCUMENTS INCORPORATED BY REFERENCE
 
     Items 10 (as to directors), 11 and 12 of Part III incorporate by reference
information from the Registrant's Proxy Statement to be filed with the
Securities and Exchange Commission in connection with the solicitation of
proxies for the Registrant's 1997 Annual Meeting of Stockholders.
 
================================================================================
<PAGE>   2
 
                      AMENDED FILING OF FORM 10-K FOR 1996
                      RESTATEMENT OF FINANCIAL STATEMENTS
                       AND CHANGES TO CERTAIN INFORMATION
 
     On November 3, 1997, the Company announced that as a result of errors
discovered in the timing of recognition of sales to several international
distributors, the Company anticipated restating its financial statements. The
review undertaken by the Company of the matter has resulted in the restatement
of its financial statements for 1996 (see Note 2 to the Consolidated Financial
Statements).
 
     General information in the originally filed Form 10-K was presented as of
March 31, 1997 filing date or earlier, as indicated. Unless otherwise stated
such, information has not been updated in this amended filing.
 
     Financial statement and related disclosures contained in this amended
filing reflect, where appropriate, changes to conform to the restatement.
 
                                     PART I
 
ITEM 1. BUSINESS
 
     When used in this Report, the words "expects", "anticipates", "estimates"
and similar expressions are intended to identify forward-looking statements.
Such statements, which include statements concerning the timing of availability
and functionality of products under development, trends in the personal computer
("PC") market, the percentage of export sales and sales to strategic customers,
and the adoption or retention of industry standards, and the availability and
cost of products from the Company's suppliers, are subject to risks and
uncertainties, including those set forth under "Factors That May Affect Results"
and elsewhere in this report, that could cause actual results to differ
materially from those projected. These forward-looking statements speak only as
of the date hereof. The Company expressly disclaims any obligation or
undertaking to release publicly any updates or revisions to any forward-looking
statements contained herein to reflect any change in the Company's expectations
with regard thereto or any change in events, conditions or circumstances on
which any such statement is based.
 
GENERAL
 
     S3 Incorporated ("S3" or the "Company") is a leading supplier of high
performance multimedia acceleration solutions for the PC market. The Company's
accelerators are designed to work cooperatively with a PC's central processing
unit ("CPU"), implementing functions best suited for a dedicated accelerator
while allowing the CPU to perform the more general purpose computing functions
of today's advanced multimedia user interface and applications. By complementing
the computing power of the general purpose CPU, the Company's integrated
software and silicon-based accelerator solutions significantly improve the
multimedia performance of PCs while reducing overall system cost and complexity.
S3 has been a pioneer in graphics acceleration since 1991, when it was the first
company to ship in volume a single chip graphics accelerator with a local bus
interface. S3 has since delivered new generations of high performance
accelerator solutions with 32-bit and 64-bit multimedia products such as
integrated 2D and 3D graphics and video accelerators, motion picture experts
group ("MPEG") decoders and audio processors enabling more advanced graphics and
integrated full-motion video acceleration. As the demand for greater multimedia
capabilities in PCs increases, particularly the demand for 2D/3D technology, the
Company is focused on delivering accelerator solutions for use in business
desktop, home and mobile computing systems. S3's families of accelerator
products and software are currently used by many of the world's leading original
equipment PC manufacturers ("OEMs") and add-in card and motherboard
manufacturers.
 
     S3 was incorporated on January 9, 1989 in the State of Delaware. The
Company operates in one principal industry segment.
 
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MARKETS AND RECENT DEVELOPMENTS
 
     Subsequent to the filing of the Company's Form 10-K for the year ended
December 31, 1996, the Company discovered that its accounting policies with
respect to revenue recognition for international sales had not been fully
followed. The Company's policy is to defer recognition of revenue on all sales
to distributors until the product is sold by each distributor to its customers.
Based on its review of this matter, the Company determined that in certain
instances, revenue was recognized at the time of shipment of product to the
Company's distributors instead of at the time the distributor sold the product
to its customer. The Company's 1996 Annual Report has been restated from the
amounts previously reported to defer the recognition of revenue until the time
of sale by the distributor to the customer.
 
     Throughout the development of the graphical user interface ("GUI")
accelerator market, S3 has been a leader in the evolution of accelerator
technology. In 1991, S3 developed the first single chip graphics accelerator to
be shipped in volume that integrated all of the specialized functions required
to accelerate GUI environments created by Windows, OS/2 and other advanced PC
operating systems.
 
     In June 1995, S3 introduced the Cooperative Accelerator Architecture(TM)
solution. Currently featured on the Compaq Presario line of desktop PCs, in
addition to a number of add-in-cards, the Cooperative Accelerator Architecture
is designed to be a three chip graphics, audio and MPEG solution for the PC
motherboard. Products incorporated into the Cooperative Accelerator Architecture
include the Trio64V+(TM) graphics/multimedia accelerator, Scenic/MX2(TM) MPEG
decoder, which provides hardware-assisted audio and video synchronization
support, 30-frames-per-second video decoding and CD-quality audio decoding, and
S3's first audio digital-to-analog converter (DAC), the Sonic/AD(TM). In
November 1995, S3 introduced the initial members of its ViRGE(R) family of 2D/3D
graphics and video acceleration products, the ViRGE and ViRGE/VX(TM)
accelerators. The ViRGE family, which is based on the Company's advanced S3d(TM)
architecture and is pin compatible with S3's Trio family of 2D integrated
graphics accelerators, was developed to enable 3D graphics on mainstream PCs
while continuing to provide 2D acceleration.
 
     In 1996, the Company expanded the breadth of its product line to introduce
products for the mobile computing and audio markets and introduced second
generation 2D/3D products. In January 1996, S3 entered the mobile computing
market with the introduction of its first notebook PC product, the Aurora
64V+(TM) dual display 2D multimedia accelerator. In May 1996, the Company
announced a worldwide marketing program, which identifies and promotes 3D
software titles and hardware products that take advantage of the S3d
acceleration technology. Hardware and software vendors in this program
participate in co-marketing arrangements with S3 and its customers. In October
1996, the Company introduced its second generation 2D/3D products, the
ViRGE/DX(TM) and ViRGE/GX(TM) accelerators. In November 1996, S3 announced its
first integrated platform accelerator product, the Plato(TM)/PX 2D accelerator.
The Plato/PX is targeted at entry-level PCs and is designed to enable PC
manufacturers to provide graphics and video capability for network computing and
Internet appliances. Also in November 1996, the Company introduced
SonicVibes(TM), its first product in a new line of audio and communications
products.
 
     The Company believes that accelerators will continue to evolve as end users
demand applications with enhanced features. Rapid technology advances are
expected by the Company to continue to result in PCs that incorporate more
powerful CPUs (such as Intel's Pentium MMX and Pentium II), increased memory and
storage capacity, enhanced connectivity features that utilize advanced network
operating systems such as Novell Netware, OS/2 and enhanced versions of the
Windows platform. The Company expects the PC, including systems for the business
desktop, mobile, and home markets, to evolve from a personal productivity tool
with a simple graphical user interface to an interactive, real time system with
enhanced features. In addition, the increasing connectivity of PCs is driving
demand for audio and communications functions.
 
     To address this market evolution, the Company has continued to develop
products for the business desktop, mobile and home PC markets. The Company is
developing products that build on its acceleration and on-chip power management
technology to bring desktop equivalent multimedia acceleration and real time
communications capabilities to the mobile market. The Company also continues to
invest in 3D acceleration, which it believes will continue to be incorporated
into home PCs to create a platform for games and
 
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<PAGE>   4
 
entertainment and into business desktop, home and mobile PCs to create a
platform for navigation and browsing for interactive, on-line services. S3 is
seeking to expand its target markets through technology investments and product
development efforts in PC system integration, audio processing, and wide area
communications.
 
     There can be no assurance that the Company will be able to successfully
complete the development of these products or to commence shipments of these
products in a timely manner, or that product specifications will not change
during the development period. In addition, even if successfully developed and
shipped, there can be no assurance that the products described above will be
successful in the marketplace.
 
PRODUCTS AND TECHNOLOGY
 
     S3 currently offers graphics and video accelerators for desktop and mobile
computers that are differentiated by a variety of features. All of S3's
accelerator solutions are designed to complement the CPU by executing those
functions most appropriate to a dedicated accelerator while allowing the CPU to
execute the more general purpose computing functions. To reduce product
manufacturing cost and to facilitate the development of future products, S3
optimizes accelerator functions by implementing the most frequently used
functions in silicon, while the least used functions are implemented in software
to be processed by the CPU.
 
  Graphics and Video Accelerator Products
 
     S3's graphics and video accelerator product line includes a broad array of
products to support PC add-in card, motherboard and computer system OEM designs
in both desktop and mobile computers. These products provide S3's customers with
a range of price/performance options, including entry-level single-chip
integrated DRAM-based 2D accelerators for desktop computers that support both
discrete graphics memory as well as shared system/graphics memory architectures
("SMA"), mid-range DRAM and SGRAM-based 2D accelerators for desktop computers,
mid-range DRAM and SGRAM-based 2D/3D accelerators for desktop computers,
high-end VRAM-based 2D/3D accelerators for PC add-in cards, and mid-range
DRAM-based 2D accelerators for mobile computers. The Company's product line
breadth and pin-compatible strategy allow its customers to migrate to higher
performance, higher functionality solutions, while staying within a single
accelerator architecture and family of compatible software drivers. The system
OEM thereby has the flexibility of designing its own upgrades or selecting from
a number of leading add-in card manufacturers that offer products based on the
Company's products. Display memory supported by the Company's accelerators
ranges from 1 to 4 megabytes of DRAM to 1 to 8 megabytes of VRAM. All of the
Company's products support advanced levels of integration, including integrated
RAMDAC and clock synthesis, video acceleration based on S3's Streams
Processor(TM) technology, and video connectivity via S3's Scenic Highway(TM)
local peripheral bus. The Company's accelerators support the industry standard
VL and PCI local buses.
 
     Trio64V+. The Trio64V+ is a 64-bit, DRAM-based 2D graphics and video
accelerator. It is pin compatible with S3's prior generation Trio64 accelerator
and includes integrated RAMDAC and clock synthesis functions. Additionally, the
Trio64V+ includes video acceleration based on S3's Streams Processor technology
and video connectivity via S3's Scenic Highway local peripheral bus.
 
     Trio64V2. The Trio64V2(TM) is a 64-bit, DRAM and SDRAM-based graphics and
video accelerator. The Trio64V2/DX(TM) is DRAM-based and pin compatible with
S3's Trio64V+ accelerator. The Trio64V2/GX(TM) incorporates a synchronous memory
interface to support SDRAM frame buffers for improved performance, increased
resolutions and pixel depths and higher refresh rates. The Trio64V2 includes an
enhanced RAMDAC, clock synthesis, enhanced video acceleration that includes
vertical video filtering, and video connectivity.
 
     Plato/PX. Plato/PX is S3's first system integration platform, integrating
onto a single chip a 64-bit, DRAM-based 2D graphics and video accelerator with
the system logic necessary to implement the host CPU memory controller and PCI
system interface. The Plato/PX accelerator eliminates the need for a separate
graphics subsystem through the use of SMA technology, and has been designed to
provide high-performance graphics and high-quality video capabilities for
cost-sensitive motherboard designs, including motherboards for sub-$1,000 PCs,
NetPCs, Network Computers and dedicated Web Browsers. The Plato/PX is otherwise
 
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functionally equivalent to a Trio64V+ with support for up to a 2 megabyte frame
buffer and includes support for an integrated RAMDAC, clock synthesizer, video
acceleration and video connectivity.
 
     ViRGE. ViRGE is a 64-bit, DRAM-based 2D/3D graphics and video accelerator.
It is pin compatible with the Trio64V+ accelerator and includes the Trio64V+'s
RAMDAC and clock synthesis functions. Additionally, the ViRGE accelerator
includes video acceleration based on S3's Streams Processor technology and video
connectivity via S3's Scenic Highway local peripheral bus.
 
     ViRGE/DX/GX. ViRGE/DX and ViRGE/GX are second generation 64-bit, 2D/3D
graphics and video accelerators, utilizing DRAM and SGRAM, respectively.
ViRGE/DX is pin compatible with the ViRGE 2D/3D accelerator and the Trio64V+ and
Trio64V2 2D accelerators. ViRGE/GX is pin compatible with the Trio64V2 2D
accelerator. Both the ViRGE/DX and ViRGE/GX include the RAMDAC and clock
synthesis functions and enhanced video acceleration based on S3's Streams
Processor technology and video connectivity via S3's Scenic Highway local
peripheral bus. ViRGE/DX and ViRGE/GX accelerators provide significant
performance improvement over the first generation ViRGE accelerators, and
include SmartFilter(TM) technology for higher performance and higher quality
texture mapping and a parallel processing perspective engine for increased
throughput. ViRGE/DX and ViRGE/GX are designed to enable the next level of
gaming applications as well as to deliver the 2D/3D platform required for
emerging business desktop applications. These desktop applications include data
visualization, accelerated VRML, 3D presentations and spreadsheets.
 
     ViRGE/VX. ViRGE/VX(TM) is a 64-bit, VRAM-based 2D/3D graphics and video
accelerator. It is the industry's first VRAM-based accelerator to include an
integrated RAMDAC and clock synthesis functions in a single chip. Additionally,
ViRGE/VX supports enhanced video acceleration with vertical video filtering
based on S3's Streams Processor technology and video connectivity via S3's
Scenic Highway local peripheral bus.
 
     ViRGE/GX2. ViRGE/GX2(TM), introduced in March 1997, is S3's third
generation 64-bit, SGRAM-based 2D/3D graphics and video accelerator that
supports TV-Out, DuoView dual-display capability, and Intel's Accelerated
Graphics Port ("AGP") standard, and is digital versatile disc ("DVD") capable.
ViRGE/GX2 includes advanced 3D and display technology designed to bridge the gap
between mainstream consumer electronics and PC technology. These features
include DuoView technology, which enables users to display different images
simultaneously on separate monitors and is designed to increase the
functionality of applications such as multi-player gaming, Web browsing and
video conferencing. In addition, AGP support is intended to provide increased
multimedia performance, while integrated TV-Out enables output from the PC to a
TV. The Company also provides a scalable solution that combines either hardware
or software MPEG-2 decoders with ViRGE/GX2's integrated DVD features.
 
     Aurora64V+. The Aurora64V+ is a 64-bit, DRAM-based 2D graphics and video
accelerator for mobile computers. It includes the Trio64V+'s integrated RAMDAC
and clock synthesis functions, a flat panel display interface and, through
DuoView(TM) technology, the ability to simultaneously display information on the
flat panel and either a computer monitor or television. DuoView technology also
enables users to view multiple windows during video conferencing applications.
Additionally, the Aurora64V+ includes video acceleration based on S3's Streams
Processor technology and video connectivity via S3's Scenic Highway local
peripheral bus.
 
  Audio and Communication Products
 
     In 1996, S3 introduced its first product in a new line of audio and
communications products. This product line is intended to offer consumers high
performance audio quality and integration while maintaining compatibility with
existing software content. Future members of the family are being designed to
integrate communications capabilities with the sound subsystem to increase
integration and functionality on the PC platform.
 
     SonicVibes. The Company believes that its SonicVibes audio processor is the
industry's first fully-integrated audio processor that uses the PCI, rather than
the ISA bus. SonicVibes retains DOS games
 
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compatibility and FM synthesis while providing wavetable music synthesis to the
PC motherboard. SonicVibes also provides an unlimited sound palette through its
support of Microsoft's DirectMusic API. The Company believes the use of the PCI
bus can enable higher performance than ISA bus-related audio products due to the
significantly greater bandwidth supported by the PCI bus. This can enable
additional interactive media applications, such as multi-player gaming.
SonicVibes is designed to lower overall system cost through the integration of
the sound capabilities of a traditional sound card onto a single-chip solution,
and eliminating the need for external ROM and RAM memory that prior audio
subsystems required.
 
  Software
 
     The Company believes that a complete solution for its customers must
include not only high performance acceleration features implemented in silicon,
but also a broad line of software, including BIOS, drivers and utilities, that
are designed to optimize the performance of its accelerators. The software is
shipped as an integral part of the Company's accelerator products. The Company
maintains a flexible driver architecture, allowing its drivers to be easily
upgraded for the enhanced features supported in next generation accelerator
products. S3 uses a combination of in-house software developers and independent
contractors to develop its software drivers. Strategic software, including BIOS
and Windows 95 and Windows NT drivers, is developed by the Company's in-house
software development team. The Company believes that software expertise is vital
to determining the optimal trade-off between silicon and software for next
generation accelerator performance and functionality enhancements. The Company
has also developed extensive capabilities for testing its accelerators, software
drivers and BIOS across a range of applications and OEM system configurations.
 
     The Company's software includes the following drivers:
 
<TABLE>
<CAPTION>
                 OPERATING SYSTEM DRIVERS                  MS-DOS SOFTWARE DRIVERS
        ------------------------------------------    ----------------------------------
        <S>                                           <C>
        IBM OS/2                                      Autodesk ADI 4.2 with support for
        Microsoft Windows 3.1                         AutoCAD and SD Studio
        Microsoft Windows 95                          Microstation
        Microsoft Windows NT
        SCO UNIX Open Desktop
</TABLE>
 
     In 1996, the Company expanded its end-user utility support. Designed to be
included with drivers by the Company's OEMs, these utilities are intended to
provide increased end-user ease-of-use support and extended control of S3
multimedia accelerator functions. The Company released the refresh utility for
Windows 95, allowing the user to change refresh rates, and the color utility for
Windows 95 and Windows NT 4.0, giving the user control of hue, saturation,
contrast, and brightness for video playback.
 
     In September 1996, Packard Bell NEC released the Company's
internally-developed TV-Tuner(TM) application, which displays live TV on the
computer using Packard Bell NEC's TV-Tuner hardware. The application allows
channel selection, volume control, record/playback features similar to a video
cassette recorder, closed caption display, and it supports international video
inputs such as NTSC, PAL and SECAM.
 
     The Company also developed OEM-specific display control utilities for its
customers who use the Aurora64V+ accelerator. These utilities enable end-user
utilization of the DuoView and mobile computing functions of the Aurora64V+
accelerator.
 
     Throughout 1996, the Company released several updates of its Galileo(TM)
utility, which was the first end-user utility introduced in 1995 and provides
ease-of-use support for resolution and color depth configuration changes and
monitor centering.
 
  3D Software(1)
 
     S3's software strategy for its traditional 2D graphics accelerators was
achieved primarily through the development of software drivers to interface the
acceleration hardware with industry-standard application programmer interfaces
(APIs), including those for Windows and OS/2. Direct support for specific
applica-
 
---------------
 
1 The software titles set forth below may be trademarks or registered trademarks
of their respective owners.
 
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tions was limited primarily to leading DOS-based CAD programs such as AutoCAD
and Microstation, due to the APIs' role in decoupling application programs from
the actual graphics hardware.
 
     In the emerging 3D acceleration market of 1996, however, an absence of
industry-standard 3D graphics APIs caused S3 to actively promote its own,
proprietary DOS-based 3D API. This proprietary software has enabled the porting
of specific 3D games and other 3D applications to the ViRGE hardware platforms.
In addition, S3 supports multiple third-party proprietary APIs, including
BRender and Renderware, that are favored by significant segments of the
application software development community. S3 has also developed an OpenGL
driver for the ViRGE family of 2D/3D accelerators to support CAD/engineering,
modeling/rendering and other high-end 3D applications traditionally supported on
workstation platforms.
 
     Specific titles that have been ported to the ViRGE architecture include
Terminal Velocity, FX Fighter, MechWarrior 2, Screamer, Cyberspeed, Destruction
Derby, Havoc, Descent II, VR Soccer, Mega Race 2, Web3D, 3D Maestro and
Truespace.
 
     S3 is also actively developing a software driver for what has emerged as
the standard API for 3D acceleration on the PC platform, Microsoft's Direct3D.
S3 intends to support its proprietary API, Direct3D, and third-party APIs based
on market acceptance of such APIs and S3's needs to support and promote new
features of future accelerators.
 
  Future Accelerators and Software
 
     The Company has in development several graphics and video accelerators,
audio and communication accelerators and related software products for currently
scheduled introduction throughout 1997. S3 believes that its extensive software,
systems and silicon expertise, use of advanced design tools, centralized
engineering group with strong design expertise, and close working relationships
with strategic customers and software developers should position the Company to
continue to rapidly and cost-effectively define, develop and market advanced
accelerators and related software for the PC market. Recognizing the rapid
conversion of consumer electronic products from analog to digital technology,
the convergence of consumer and computing systems into new and evolving
information access devices and the personal computer's inherent position as the
most advanced and well-positioned digital platform, the Company intends to
leverage its PC system architecture and multimedia acceleration expertise to
develop new products for both computer and consumer applications that exploit
these trends.
 
     S3's accelerator products are designed to improve the graphics performance
of PCs using Intel and other x86-based microprocessors, and Microsoft Windows,
Windows NT and IBM OS/2 operating systems, the predominant standards in today's
PC market. Any shift away from such standards would require the Company to
develop new products and may have a material adverse effect on the Company's
operating results. The market for the Company's accelerator products is
characterized by rapidly changing technology, evolving industry standards,
frequent new product introductions, and significant price competition, resulting
in short product life cycles and regular reductions of unit average selling
prices over the life of a specific product. Products in the Company's market
typically have a product life cycle of 12 to 24 months. See "Factors That May
Affect Results -- Importance of New Products; Rapid Technological Change" and
"-- Dependence on Accelerator Product Line."
 
FACTORS THAT MAY AFFECT RESULTS
 
  Fluctuations in Quarterly Operating Results
 
     The Company's operating results have historically been, and will continue
to be, subject to quarterly and other fluctuations due to a variety of factors,
including changes in pricing policies by the Company, its competitors or its
suppliers, anticipated and unanticipated decreases in unit average selling
prices of the Company's products, availability and cost of products from the
Company's suppliers, changes in the mix of products sold and in the mix of sales
by distribution channels, the gain or loss of significant customers, new product
introductions by the Company or its competitors, market acceptance of new or
enhanced versions of the Company's products, seasonal customer demand, and the
timing of significant orders. Operating results
 
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<PAGE>   8
 
could also be adversely affected by general economic and other conditions
affecting the timing of customer orders and capital spending, a downturn in the
market for PCs, and order cancellations or rescheduling. In particular, the
market for PCs in 1996 experienced a weakening in the trends for demand as
compared with 1995 and grew at a lower rate as compared with 1995. These factors
could adversely affect demand for the Company's products. In addition, the
pricing environment for graphics accelerators has recently experienced and is
expected to continue to experience increasing pricing pressures due in part to
the alleviation of supply constraints that contributed to more stable pricing in
1995 and to aggressive pricing from certain of the Company's competitors. In
particular, the Company's Trio family of integrated 2D accelerators, which
accounted for a majority of the Company's revenues in 1996, experienced
significant decreases in average selling prices in 1996. The Company expects
that the graphics accelerator market will transition from 2D acceleration to 3D
acceleration, and the Company has introduced its ViRGE family of 2D/3D
accelerators in response to this expected transition. As a result of the entry
of competitors into the 3D acceleration market, the Company anticipates that it
may experience increased pricing pressures on average selling prices for the
ViRGE family of 2D/3D accelerators. If the transition occurs slower than
expected, if the Company's 2D/3D products do not achieve market acceptance, or
if pricing pressures increase, the Company's operating results could be
adversely affected. Further, because the Company is continuing to increase its
operating expenses for personnel and new product development, the Company's
operating results would be adversely affected if such budgeted sales levels were
not achieved. PC graphics and multimedia subsystems include, in addition to the
Company's products, a number of other components which are supplied by
third-party manufacturers. Any shortage of such components in the future could
adversely affect the Company's business and operating results. Furthermore, it
is possible that the Company's products may be found to be defective after the
Company has already shipped significant volume production. There can be no
assurance that the Company would be able to successfully correct such defects or
that such corrections would be acceptable to customers, and the occurrence of
such events could have a material adverse effect on the Company's business and
operating results.
 
     Because the Company must order products and build inventory substantially
in advance of product shipments, and because the markets for the Company's
products are volatile and subject to rapid technological and price changes,
there is a risk that the Company will forecast incorrectly and produce excess or
insufficient inventories of particular products. In addition, the Company's
customers may change delivery schedules or cancel orders without significant
penalty. To the extent the Company produces excess or insufficient inventories
of particular products, the Company's operating results could be adversely
affected.
 
     The Company ships more product in the third month of each quarter than in
either of the first two months of the quarter, with shipments in the third month
higher at the end of the month. This pattern, which is common in the
semiconductor industry, is likely to continue. The concentration of sales in the
last month of the quarter may cause the Company's quarterly results of
operations to be more difficult to predict. Moreover, a disruption in the
Company's production or shipping near the end of a quarter could materially
reduce the Company's net sales for that quarter. The Company's reliance on
outside foundries and independent assembly and testing houses reduces the
Company's ability to control, among other things, delivery schedules.
 
     Due to the foregoing factors, it is likely that in some future quarter or
quarters the Company's operating results may be below the expectations of public
market analysts and investors. In such event, the price of the Company's Common
Stock would likely be materially and adversely affected.
 
  Importance of New Products; Rapid Technological Change
 
     The PC industry in general, and the market for the Company's products in
particular, is characterized by rapidly changing technology, evolving industry
standards, frequent new product introductions and significant price competition,
resulting in short product life cycles and regular reductions of unit average
selling prices over the life of a specific product. Products in the Company's
market typically have a life cycle of 12 to 24 months, with regular reductions
of unit average selling prices over the life of a specific product. The
successful development and commercialization of new products required to replace
or supplement existing products involve many risks, including the identification
of new product opportunities, the successful and timely completion of the
development process, and the selection of the Company's products by leading
 
                                        8
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systems suppliers and add-in card and motherboard manufacturers for design into
their products. There can be no assurance that the Company will successfully
identify new product opportunities and develop and bring to market in a timely
manner successful new products, that products or technologies developed by
others will not render the Company's products or technologies noncompetitive, or
that the Company's products will be selected for design into its customers'
products.
 
     The Company is continually developing new products to address changing
market needs, and its operating results may fluctuate from those in prior
quarters or may be adversely affected in quarters in which it is undergoing a
product transition or in which existing products are under price pressures due
to competitive factors. The Company also intends to add increased functionality
to its multimedia products, such as system logic, audio, communications or other
additional functions. Market acceptance of the Company's products will also
depend upon acceptance of other components, such as memory, that the Company's
products are designed to work with. For example, the Company has recently
introduced accelerators designed to work with synchronous graphics RAM ("SGRAM")
and/or synchronous DRAM ("SDRAM") which the Company believes offer better
performance for its price than the more expensive video RAM ("VRAM"). However,
there can be no assurance that other memory technologies, such as Rambus DRAM,
will not achieve a greater degree of market acceptance than SGRAMs or SDRAMs. If
new products are not brought to market in a timely manner or do not address
market needs or achieve market acceptance, then the Company's operating results
will be adversely affected. The Company's 1994 operating results were adversely
affected in part because the Company had made a strategic decision to transition
its product offerings from 32-bit to 64-bit accelerators during the first half
of 1994, but due to a lack of PC system logic chipsets based on the PCI bus
standard and a slower than anticipated shift from 32-to 64-bit graphics, sales
of S3's PCI-based Vision64 family of accelerators were less than expected.
During the same period of time, competitors' 32-bit integrated accelerator
products offered a more competitive solution to the Company's customers and
ultimately necessitated an adjustment in the valuation of the Company's 32-bit
non-integrated inventory. In anticipation of a shift in demand from 2D to 3D
technology, the Company has introduced and is continuing to develop products in
its ViRGE family of 2D/3D multimedia accelerators. If the transition from 2D to
3D in the PC market is slower than the Company expects or if these products are
not brought to market in a timely manner or do not address market needs or
achieve market acceptance, the Company's operating results could be adversely
affected. See "Management's Discussion and Analysis of Financial Condition and
Results of Operations."
 
  Dependence on Foundries and Other Third Parties
 
     The Company currently relies on several independent foundries to
manufacture its products either in finished form or wafer form. The Company
currently has long-term supply arrangements with two of its foundries, a "take
or pay" contract with Taiwan Semiconductor Manufacturing Company ("TSMC") and a
joint venture foundry, United Semiconductor Corporation ("USC"). In 1995, the
Company expanded and formalized its relationship with TSMC to provide additional
capacity over the 1996 to 2000 timeframe. The foundry agreement with TSMC
requires the Company to make certain annual advance payments to purchase certain
committed capacity amounts to be applied against the following year's capacity
or forfeit advance payments against such amounts. In addition, the Company
entered into an agreement with United Microelectronics Corporation ("UMC") and
Alliance Semiconductor Corporation to form a separate Taiwanese company, USC,
for the purpose of building and managing a semiconductor manufacturing facility.
The Company invested $53.0 million in 1996 and $36.4 million in 1995 for its
23.75% equity interest. The facility commenced production utilizing advanced
submicron semiconductor manufacturing processes in late 1996. The Company has
the right to purchase up to 31.25% of the output from the foundry. To the extent
the Company purchases excess inventories of particular products or chooses to
forfeit advance payments, the Company's operating results could be adversely
affected. To the extent USC experiences operating losses, the Company will
recognize its proportionate share of such losses and may be required to
contribute additional capital. The Company believes that a number of
manufacturers are expanding or planning to expand their fabrication capacity
over the next several years, which could lead to overcapacity in the market and
resulting decreases in costs of finished wafers. If the wafers produced by USC
cannot be produced at competitive prices,
 
                                        9
<PAGE>   10
 
USC could sustain operating losses. There can be no assurance that such
operating losses will not have a material adverse effect on the Company's
consolidated results of operations.
 
     The Company conducts business with its other current foundries by
delivering written purchase orders specifying the particular product ordered,
quantity, price, delivery date and shipping terms and, therefore, such foundries
are generally not obligated to supply products to the Company for any specific
period, in any specific quantity or at any specified price, except as may be
provided in a particular purchase order. To the extent a foundry terminates its
relationship with the Company or should the Company's supply from a foundry be
interrupted or terminated for any other reason, such as a natural disaster or an
injunction arising from alleged violations of third party intellectual property
rights, the Company may not have a sufficient amount of time to replace the
supply of products manufactured by that foundry. Until 1996, due to worldwide
semiconductor supply constraints, especially with respect to advanced process
technologies required by the Company's products, the Company was unable to
obtain a sufficient supply of products to enable it to meet demand and was
required to allocate available supply of its products among its customers. There
can be no assurance that the Company will obtain sufficient advanced process
technology foundry capacity to meet customer demand in the future. The Company
is continuously evaluating potential new sources of supply. However, the
qualification process and the production ramp-up for additional foundries has in
the past taken, and could in the future take, longer than anticipated, and there
can be no assurance that such sources will be able or willing to satisfy the
Company's requirements on a timely basis or at acceptable quality or per unit
prices.
 
     Two of the Company's principal foundries, TSMC and UMC, and the Company's
foundry joint venture, USC, are located in the Science-Based Industrial Park in
Hsin Chu City, Taiwan. The Company currently expects these three foundries to
supply the substantial portion of the Company's products in 1997. Disruption of
operations at these foundries for any reason, including work stoppages, fire,
earthquakes or other natural disasters, would cause delays in shipments of the
Company's products, and could have a material adverse effect on the Company's
results of operations. In addition, as a result of the rapid growth of the
semiconductor industry based in the Science-Based Industrial Park, severe
constraints have been placed on the water and electricity supply in that region.
Any shortages of water or electricity could adversely affect the Company's
foundries' ability to supply the Company's products, which could have a material
adverse effect on the Company's results of operations.
 
     The Company is using multiple sources for certain of its products, which
may require the Company's customers to perform separate product qualifications.
The Company has not, however, developed alternate sources of supply for certain
other products, and its newly introduced products are typically produced
initially by a single foundry until alternate sources can be qualified. The
requirement that a customer perform separate product qualifications or a
customer's inability to obtain a sufficient supply of products from the Company
may cause that customer to satisfy its product requirements from the Company's
competitors, which would adversely affect the Company's results of operations.
 
     The Company's products are assembled and tested by a variety of independent
subcontractors. The Company's reliance on independent assembly and testing
houses to provide these services involves a number of risks, including the
absence of adequate availability of certain packaging technologies, the absence
of guaranteed capacity and reduced control over delivery schedules, quality
assurance and costs. The Company also is subject to the risks of shortages and
increases in the cost of raw materials used in the manufacture or assembly of
the Company's products.
 
     Constraints or delays in the supply of the Company's products, whether
because of capacity constraints, unexpected disruptions at the foundries or
assembly or testing houses, delays in obtaining additional production at
existing foundries or in obtaining production from new foundries, shortages of
raw materials, or other reasons, could result in the loss of customers and other
material adverse effects on the Company's operating results, including effects
that may result should the Company be forced to purchase products from higher
cost foundries or pay expediting charges to obtain additional supply. See
"Business -- Sales, Marketing and Distribution" and "-- Manufacturing and Design
Methodology."
 
                                       10
<PAGE>   11
 
  Transactions to Obtain Manufacturing Capacity; Future Capital Needs
 
     In order to obtain an adequate supply of wafers, especially wafers
manufactured using advanced process technologies, the Company has entered into
and may consider in the future various transactions, including the use of "take
or pay" contracts that commit the Company to purchase specified quantities of
wafers over extended periods, equity investments in or advances or issuances of
equity securities to wafer manufacturing companies in exchange for guaranteed
production capacity, or the formation of joint ventures to own and operate or
construct foundries or to develop certain products. Any of such transactions
would involve financial risk to the Company and could require the Company to
commit substantial capital or provide technology licenses in return for
guaranteed production capacity. In particular, the Company has entered into a
"take or pay" contract with TSMC and has entered into the USC joint venture. The
need to commit substantial capital may require the Company to seek additional
equity or debt financing. The sale or issuance of additional equity or
convertible debt securities could result in additional dilution to the Company's
stockholders. There can be no assurance that such additional financing, if
required, will be available when needed or, if available, will be on terms
acceptable to the Company. See "Management's Discussion and Analysis of
Financial Condition and Results of Operations -- Liquidity and Capital
Resources" and "Business -- Manufacturing and Design Methodology."
 
  Dependence on Accelerator Product Line
 
     S3's products are designed to improve the graphics and multimedia
performance of x86-based PCs and Microsoft Windows, Windows NT and IBM OS/2
operating systems, the predominant standards in today's PC market. Any shift
away from such standards would require the Company to develop new products. The
Company expects that additional specialized graphics processing and general
purpose computing capabilities will be integrated into future versions of Intel
and other x86-based microprocessors and that standard multimedia accelerators in
the future will likely integrate memory, system logic, audio, communications or
other additional functions. The Company has not previously offered either single
function or integrated accelerator products that provide these functions, which
have traditionally been provided by separate single function chips or chipsets.
The Company has been and will continue to be required to expand the scope of its
research and development efforts to provide these functions, which will require
the hiring of engineers skilled in the respective areas and additional
management and coordination among the Company's design and engineering groups.
Alternatively, the Company may find it necessary or desirable to license or
acquire technology to enable the Company to provide these functions, and there
can be no assurance that any such technology will be available for license or
purchase on terms acceptable to the Company. Furthermore, there is a limited
amount of space on PC motherboards, and companies that offer solutions that
provide the greatest amount of functionality within this limited space may have
a competitive advantage. While the Company's strategy is to develop new and
enhanced graphics and multimedia accelerator products that will be complementary
to present and future versions of Intel and other x86-based microprocessors and
integrate additional functionality, there can be no assurance that the Company
will be able to develop such new or enhanced products in a timely manner or
correctly anticipate the additional functionality that will be required to
compete effectively in this market. There can be no assurance that, if
developed, the Company's new or enhanced products that incorporate these
functions will achieve market acceptance. There also can be no assurance that
the market for graphics and multimedia accelerators will continue to grow in the
future or that new technological developments or changes in standards will not
result in decreased demand for graphics and multimedia accelerators or for the
Company's products that are not compatible with such changed standards. For
example, in 1996, there was an absence of an industry standard 3D graphics API.
As a result, the Company developed and promoted its proprietary API. Microsoft
has since introduced its Direct3D API, which has emerged as the standard API for
3D acceleration. While the Company's 3D accelerators currently support the
Company's proprietary API and Microsoft's Direct 3D API, there can be no
assurance that another API will emerge as an industry standard that the
Company's accelerators will not support. While the PC industry in recent periods
has been characterized by substantial demand, such demand has historically been
cyclical, and there can be no assurance that this demand will continue in future
periods or that demand for the Company's products will continue. The occurrence
of any such events would have a material adverse effect on the Company's
operating results.
 
                                       11
<PAGE>   12
 
  Substantial Competition
 
     The market for the Company's products is extremely competitive and is
characterized by declining selling prices over the life of a particular product
and rapid technological changes. The Company's principal competitors for
graphics accelerators include ATI Technologies, Inc., Cirrus Logic, Inc., Matrox
Graphics, Inc., and Trident Microsystems, Inc. The Company's principal
competitors in the multimedia market include the companies named in the
preceding sentence and a number of smaller companies which may have greater
flexibility to address specific market needs. Potential competitors in these
markets include both large and emerging domestic and foreign semiconductor
companies. In particular, there is a significant number of established and
emerging companies that have developed, are developing or have announced plans
to develop 3D graphics chips, including Intel Corporation and Lockheed Martin
Corporation, which have announced that they are jointly developing such chips,
which are currently expected to become available in the second half of 1997, and
Texas Instruments Incorporated, which has announced a development and marketing
agreement with 3Dlabs Inc., Ltd. In addition, Microsoft has announced that it is
developing a reference architecture, Talisman, with an alternative method of
providing 3D functionality. Microsoft is working with a number of companies,
including Cirrus Logic, Inc., Samsung Electronics Co., Ltd., Philips N.V. and
Fujitsu Ltd., to implement this architecture. There can be no assurance that the
Company's product offerings to address the demand for the next generation of
2D/3D accelerators will be competitive, and if such product offerings are not
competitive, the Company's results of operations in 1997 and future periods
could be materially and adversely affected. To the extent the Company expands
its product line to add products with additional functionality, such as audio,
communications and system logic functions, it will encounter substantial
competition from established semiconductor companies and may experience
competition from companies designing chips based on different technologies, such
as software-centric multimedia processors. Further, the need of PC manufacturers
to rapidly introduce a variety of products aimed at different segments of the PC
market may lead to the shift by such system OEMs to the purchase of graphics and
multimedia add-in cards provided by others. Certain of the Company's competitors
supply both add-in cards and accelerator chips, which may provide those
competitors with an advantage over suppliers such as the Company that supply
only accelerator chips. In addition, certain of the Company's potential
competitors that supply add-in cards and/or motherboards, such as Intel
Corporation, may seek to use their card/board business to leverage the startup
of their graphics accelerator business. Certain of the Company's current and
potential competitors have greater technical, manufacturing, financial and
marketing resources than the Company. The Company believes that its ability to
compete successfully depends upon a number of factors both within and outside of
its control, including product performance, product features, product
availability, price, quality, timing of new product introductions by the Company
and its competitors, the emergence of new graphics and PC standards, customer
support, and industry and general economic trends. There can be no assurance
that the Company will have the financial resources, technical expertise, or
marketing, distribution and support capabilities to compete successfully. The
Company's future success will be highly dependent upon the successful
development and introduction of new products that are responsive to market
needs. There can be no assurance that the Company will be able to successfully
develop or market any such products. See "Business -- Competition."
 
  Customer Concentration
 
     The Company's sales are concentrated within a limited customer base. Two
customers, Diamond Multimedia Systems Inc. and Synnex, accounted for 16% and
15%, of net sales in 1996. Two customers, Diamond Multimedia Systems, Inc. and
Intel Corporation, accounted for 17% and 12%, respectively, of net sales in
1995, and two customers, IBM and Digital Equipment Corporation, accounted for
19% and 16%, respectively, of net sales in 1994. The Company expects a
significant portion of its future sales to remain concentrated within a limited
number of strategic customers. There can be no assurance that the Company will
be able to retain its strategic customers or that such customers will not
otherwise cancel or reschedule orders, or in the event of canceled orders, that
such orders will be replaced by other sales. In addition, sales to any
particular customer may fluctuate significantly from quarter to quarter. The
occurrence of any such events could have a material adverse effect on the
Company's operating results. See "Business -- Sales, Marketing and
Distribution."
 
                                       12
<PAGE>   13
 
  Management of Growth; Dependence on Key Personnel
 
     Since its inception, the Company has experienced significant growth in the
number of its employees and in the scope of its operating and financial systems,
resulting in increased responsibilities for the Company's management. To manage
future growth effectively, the Company will need to continue to improve its
operational, financial and management information systems, procedures and
controls, and expand, train, motivate, retain and manage its employee base. The
Company is in the process of implementing a new management information system.
Any problems encountered in the implementation of such system could adversely
affect the Company's operations. There can be no assurance that the Company will
be able to manage its growth effectively, and failure to do so could have a
material adverse effect on the Company's operating results.
 
     The Company's future success depends in part on the continued service of
its key engineering, sales, marketing and executive personnel, including highly
skilled semiconductor design personnel and software developers, and its ability
to identify and hire additional personnel. Competition for such personnel is
intense and there can be no assurance that the Company can retain and recruit
necessary personnel to operate its business and support its future growth. In
August 1996, the Company appointed a new President and Chief Executive Officer
to replace Terry N. Holdt, who retired, and in March 1997, the Company's Chief
Financial Officer resigned, and there can be no assurance as to the effects of
this management transition on the Company's business and operating results. The
loss of key personnel could have a material adverse effect on the Company's
business and operating results. The Company does not maintain key man insurance
on any of its employees. See "Business Employees" and "Executive Officers of the
Registrant."
 
  Importance of Intellectual Property; Litigation Involving Intellectual
Property
 
     The Company's ability to compete will be affected by its ability to protect
its proprietary information. The Company has filed several United States and
foreign patent applications and to date has a number of issued United States
patents. The Company relies primarily on its trade secrets and technological
know-how in the conduct of its business. There can be no assurance that the
steps taken by the Company to protect its intellectual property will be adequate
to prevent misappropriation of its technology or that the Company's competitors
will not independently develop technologies that are substantially equivalent or
superior to the Company's technology. The semiconductor and software industries
are characterized by frequent claims and related litigation regarding patent and
other intellectual property rights. The Company is party to various claims of
this nature. Although the ultimate outcome of these matters is not presently
determinable, management presently believes that the resolution of all such
pending matters will not have a material adverse effect on the Company's
operating results. There can be no assurance that third parties will not assert
additional claims or initiate litigation against the Company, its foundries, or
its customers with respect to existing or future products. In addition, the
Company may initiate claims or litigation against third parties for infringement
of the Company's proprietary rights or to determine the scope and validity of
the proprietary rights of the Company or others. Litigation by or against the
Company has in the past, in the case of the Brooktree Corporation ("Brooktree")
litigation, resulted and could in the future result in substantial expense to
the Company and diversion of the efforts of the Company's technical and
management personnel, whether or not litigation is determined in favor of the
Company. In the event of litigation to determine the validity of any third-party
claims, such litigation could result in significant expense to the Company and
divert the efforts of the Company's technical and management personnel, whether
or not litigation is determined in favor of the Company. In the event of an
adverse result in any such litigation, the Company could be required to pay
substantial damages, cease the manufacture, use, sale, offer for sale and
importation of infringing products, expend significant resources to develop or
obtain non-infringing technology, discontinue the use of certain processes or
obtain licenses to the technology which is the subject of the litigation. There
can be no assurance that the Company would be successful in such development or
acquisition or that any such licenses, if available, would be available on
commercially reasonable terms, and any such development or acquisition could
require expenditures by the Company of substantial time and other resources. Any
such litigation or adverse result therefrom could have a material adverse effect
on the Company's operating results.
 
                                       13
<PAGE>   14
 
     In October 1995, Brooktree filed a complaint against the Company in the
United States District Court for the Southern District of California, alleging
that the Company's current products infringe a Brooktree patent. Such a lawsuit
resulted in substantial expense to the Company to defend the action and diverted
the efforts of the Company's technical and management personnel. In August 1996,
the Company and Brooktree entered into a settlement and license agreement
pursuant to which all claims and counterclaims between the parties were
dismissed and the Company agreed to pay to Brooktree a license fee and royalties
related to certain product revenues over a five-year period.
 
  International Operations
 
     Export sales accounted for 58%, 44% and 42% of the Company's net sales in
1996, 1995 and 1994, respectively, and the Company expects that export sales
will continue to represent a significant portion of net sales, although there
can be no assurance that export sales, as a percentage of net sales, will remain
at current levels. In addition, a substantial proportion of the Company's
products are manufactured, assembled and tested by independent third parties in
Asia. Due to its export sales and independent third party manufacturing,
assembly and testing operations, and its joint venture foundry, the Company is
subject to the risks of conducting business internationally, including
unexpected changes in, or impositions of, legislative or regulatory
requirements, fluctuations in the U.S. dollar, which could increase the sales
price in local currencies of the Company's products in foreign markets or
increase the cost of wafers purchased by the Company, delays resulting from
difficulty in obtaining export licenses for certain technology, tariffs and
other barriers and restrictions, potentially longer payment cycles, greater
difficulty in accounts receivable collection, potentially adverse taxes, and the
burdens of complying with a variety of foreign laws. In addition, the Company is
subject to general geopolitical risks, such as political and economic
instability and changes in diplomatic and trade relationships, in connection
with its international operations. Two of the Company's independent foundries,
UMC and TSMC, and the Company's joint venture foundry, USC, are located in
Taiwan. The Company currently expects these three foundries to supply the
substantial portion of the Company's products in 1997. The People's Republic of
China and Taiwan at times experienced strained relations in 1995 and 1996, and
the worsening of relations or the development of hostilities between the two
parties could have a material adverse effect on the Company. Although the
Company has not to date experienced any material adverse effect on its
operations as a result of such regulatory, geopolitical, economic and other
factors, there can be no assurance that such factors will not adversely impact
the Company's operations in the future or require the Company to modify its
current business practices. In addition, the laws of certain foreign countries
may not protect the Company's intellectual property rights to the same extent as
do the laws of the United States.
 
  Increased Leverage
 
     In connection with the sale of $103,500,000 aggregate principal amount of
Convertible Subordinated Notes in September 1996, the Company's ratio of its
long-term debt to its total capitalization increased from approximately 9.5% at
June 30, 1996 to approximately 31.2% at December 31, 1996. As a result of this
additional indebtedness, the Company's principal and interest obligations will
increase substantially. The degree to which the Company is leveraged could
adversely affect the Company's ability to obtain additional financing for
working capital or other purposes and could make it more vulnerable to economic
downturns and competitive pressures. The Company's increased leverage could also
adversely affect its liquidity, as a substantial portion of available cash from
operations may have to be applied to meet debt service requirements and, in the
event of a cash shortfall, the Company could be forced to reduce other
expenditures to be able to meet such requirements. See "Selected Consolidated
Financial Data," and "Management's Discussion and Analysis of Financial
Condition and Results of Operations -- Liquidity and Capital Resources."
 
  Volatility of Stock Price
 
     The market price of the shares of Common Stock, like that of the common
stock of many other semiconductor companies, has been and is likely to be highly
volatile, and the market has from time to time experienced significant price and
volume fluctuations that are unrelated to the operating performance of
particular companies. The market price of the Common Stock could be subject to
significant fluctuations in
 
                                       14
<PAGE>   15
 
response to quarter-to-quarter variations in the Company's anticipated or actual
operating results, announcements of new products, technological innovations or
setbacks by the Company or its competitors, conditions in the semiconductor and
PC industries, the commencement of, developments in or outcome of litigation,
changes in or the failure by the Company to meet estimates of the Company's
performance by securities analysts, market conditions for high technology stocks
in general, and other events or factors.
 
SALES, MARKETING AND DISTRIBUTION
 
     S3 markets and distributes its products through a direct sales organization
supported by field applications engineers, as well as through a network of
independent manufacturers' representatives and regional distributors. In North
America, the Company uses a combination of independent manufacturers'
representatives and a direct sales force operating from the Company's sales
offices in California, Florida, Georgia, Oregon and Texas. In Asia, the Company
operates from sales and distribution offices in Hong Kong, Japan, Singapore and
Taiwan, and through manufacturers' representatives and local distributors
located in People's Republic of China, Hong Kong, Japan, Korea and Taiwan. In
Europe, the Company uses organizations that are both manufacturers'
representatives and distributors in France, Germany, Italy and the United
Kingdom. The loss of one or more representatives could have an adverse effect on
the Company's operating results. The Company has a global shipment program
pursuant to which certain finished products are shipped directly to customers
from the Company's independent assembly and testing houses. This program is
intended to provide more timely delivery of such products to those customers by
eliminating the intermediate step of shipping finished products to the Company's
Santa Clara, California facility for repackaging and reshipment.
 
     The Company sells multimedia accelerators to leading systems manufacturers
such as Acer Incorporated, AST Research Incorporated, Compaq Computer
Corporation, Dell Computer Corporation, Gateway 2000, Inc., Hewlett-Packard
Company, IBM, Packard Bell NEC, and Toshiba Corporation and to leading add-in
board and motherboard manufacturers such as Diamond Multimedia Systems, Inc.,
DataExpert Corporation, ELSA GmbH, Intel Corporation, Micronics Computers, Inc.,
Number Nine Visual Technology Corporation, STB Systems, Inc. and Vtech Holdings
Limited. Sales to these customers are typically made pursuant to specific
purchase orders, which are cancelable without significant penalties. In 1996,
two customers, Diamond Multimedia Systems, Inc., and Synnex accounted for 16%
and 15% of net sales, respectively. In 1995, two customers, Diamond Multimedia
Systems, Inc. and Intel Corporation, accounted for 17% and 12%, respectively, of
net sales. The Company expects a significant portion of its future sales to
remain concentrated within a limited number of strategic customers. There can be
no assurance that the Company will be able to retain its strategic customers or
that such customers will not otherwise cancel or reschedule orders, or in the
event of canceled orders, that such orders will be replaced by other sales. In
addition, sales to any particular customer may fluctuate significantly from
quarter to quarter. The occurrence of any such event could have a material
adverse effect on the Company's operating results.
 
     Export sales accounted for 58%, 44%, and 42% of net sales in 1996, 1995,
and 1994 respectively. Approximately 37% of export sales in 1996 were to
affiliates of United States customers. Due to its export sales, the Company is
subject to the risks of conducting business internationally, including those set
forth above under "Factors That May Affect Results -- International Operations."
 
CUSTOMER SUPPORT AND SERVICE
 
     The Company believes that customer service and technical support are
important competitive factors in the accelerator market. The Company provides
technical support for customers in major markets in North America, Europe and
Asia. Distributors and manufacturers' representatives supplement the Company's
efforts by providing additional customer service and technical support for S3's
products. S3 also provides several other types of technical support, including
software distribution through the World Wide Web, product demonstration
software, evaluation boards and application notes.
 
     The Company works closely with its customers in tracking the progress of
its product designs, providing applications design support and upgrading the
customers' software to provide the latest enhancements under the Company's
software maintenance program. S3 believes that close contact with its customers
not only
 
                                       15
<PAGE>   16
 
improves their level of satisfaction, but also provides important insights into
defining the system requirements for next generation accelerators and related
software products.
 
MANUFACTURING AND DESIGN METHODOLOGY
 
     The Company currently relies on several independent foundries to
manufacture all of its products. The Company's strategy is to utilize a number
of qualified foundries that it believes provide cost, technology or capacity
advantages for specific products. This strategy allows S3 to avoid the
significant capital investment to construct an in-house wafer fabrication
facility. As a result, S3 is able to focus its resources on product design and
development, quality assurance, marketing, and customer support. The Company's
accelerators are currently manufactured using a triple level metal CMOS process
with line geometries as small as 0.45 micron. The Company will utilize a four
level metal CMOS process with 0.35 micron line geometries for certain of its
products scheduled for 1997 production. In order to provide increased
functionality to meet the needs of the multimedia market without substantially
increasing die size, the Company's products will have to be manufactured using
increasingly smaller line geometries. The Company designs its products using
proprietary circuit modules that are scalable in size to enable more rapid
adoption of smaller line geometry manufacturing processes and a common design
rule approach to operate within the process parameters of multiple foundries.
Multiple sources for certain products increase the Company's ability to supply
its customers with those products and reduce the Company's dependence on any
single foundry. However, the Company has not developed alternate sources of
supply for certain products, and its newly introduced products are typically
produced initially by a single foundry until alternate sources can be qualified.
The Company currently has long-term supply agreements with only the two
foundries described below. The Company conducts business with all but one of its
current foundries by delivering written purchase orders specifying the
particular product ordered, quantity, price, delivery date and shipping terms
and, therefore, the foundries are generally not obligated to supply products to
the Company for any specific period, in any specific quantity or at any
specified price, except as may be provided in a particular purchase order. To
the extent a foundry terminates its relationship with the Company or should the
Company's supply from a foundry be interrupted or terminated for any other
reason, such as a natural disaster, the Company may not have a sufficient amount
of time to replace the supply of products manufactured by that foundry.
 
     Historically, certain foundries have also provided packaging and testing
for S3's products and other activities necessary to deliver finished products.
S3 pays those foundries only for fully tested products meeting predetermined
specifications. In the assembly process, the silicon wafers are separated into
individual die that are then assembled into packages and tested in accordance
with the Company's test procedures. Following assembly, the packaged devices are
further tested and inspected pursuant to the Company's quality assurance program
before shipment to customers. To ensure the integrity of its foundries' quality
assurance procedures, the Company develops detailed test procedures and
specifications for each product and requires the foundry to use those procedures
and specifications before shipping finished products or wafers. Product returns
to date have not been significant.
 
     In 1995, the Company entered into two long-term manufacturing capacity
arrangements. The Company entered into an agreement with UMC and Alliance
Semiconductor Corporation to form, USC, a separate Taiwanese company, for the
purpose of building and managing a semiconductor manufacturing facility in the
Science-Based Industrial Park in Hsin Chu City, Taiwan. The facility began
production utilizing advanced submicron semiconductor manufacturing processes in
1996. The Company has the right to purchase 31.25% of the output from the
foundry. In addition, the Company expanded and formalized its relationship with
TSMC to provide additional capacity over the 1996 to 2000 time frame. The
agreement with TSMC requires the Company to make certain annual advance payments
to be applied against the following year's capacity. See "Management's
Discussion and Analysis of Financial Condition and Results of
Operations -- Liquidity and Capital Resources."
 
     There can be no assurance that the Company will obtain sufficient sources
of supply of product to meet customer demand in the future. Obtaining sufficient
foundry capacity is particularly difficult during periods of high growth, and
may become substantially more difficult if the Company's product requirements
increase significantly. In addition, because the Company must order products and
build inventory substantially in
 
                                       16
<PAGE>   17
 
advance of product shipments, there is a risk that the Company will forecast
incorrectly and produce excess or insufficient inventories of particular
products. This inventory risk is heightened because certain of the Company's key
customers place orders with short lead times. In addition, the Company's
customers may change delivery schedules or cancel orders without significant
penalty. To the extent the Company produces excess or insufficient inventories
of particular products, the Company's operating results could be adversely
affected. See "Factors That May Affect Results -- Dependence on Foundries and
Other Third Parties" and "-- Transactions to Obtain Manufacturing Capacity;
Future Capital Needs."
 
     PC graphics and multimedia subsystems include, in addition to the Company's
products, a number of other components, which are supplied by third party
manufacturers. Any shortage of such components in the future could adversely
affect the Company's business and operating results.
 
     The Company uses an automated design environment based on advanced
workstations, dedicated product simulators, system simulation with hardware and
software modeling, and the use of a high level design description language in
order to more rapidly define, develop and deliver new and enhanced products. The
Company considers its computer-aided engineering ("CAE") and computer-aided
design ("CAD") capabilities to be important to its future success in all areas
of new product development and intends to continue to enhance its CAE/CAD
systems. Although the Company extensively tests its software and hardware
products prior to their introduction, it is possible that design errors may be
discovered after initial product sampling, resulting in delays in volume
production or recall of products sold. The occurrence of any such errors could
have a material adverse effect on the Company's product introduction schedule
and operating results.
 
RESEARCH AND DEVELOPMENT
 
     The Company believes that continued timely development and introduction of
new products are essential to maintaining its competitive position. The Company
currently conducts most of its product development effort in-house and, at
December 31, 1996, had a staff of 369 research and development personnel, of
whom approximately 30% are involved in software development. The Company also
employs outside consultants to assist with software testing. The Company is
focusing its current development efforts primarily on the development of
enhanced versions of its existing family of graphics and multimedia accelerators
and adding new functionality to its products for business desktop, mobile and
home PC markets. In addition, the Company intends to continue to devote
significant resources to the development of a broad range of high-performance
software drivers to support its products. During 1996, 1995 and 1994, the
Company spent approximately $63.4 million, $42.1 million and $17.9 million,
respectively, on research and development activities.
 
COMPETITION
 
     The markets in which the Company competes are extremely competitive and the
Company expects that competition will increase. The principal factors of
competition in the Company's markets include performance, product features,
product availability, price, quality, timing of new product introductions by the
Company and its competitors, the emergence of new graphics and PC standards, and
customer support. Price competition in the industry is intense and may increase,
which may have a material adverse effect on the Company's operating results.
There can be no assurance that the Company will be able to compete successfully
as to price or any of these other factors.
 
     The Company's principal competitors for graphics accelerators include ATI
Technologies, Inc., Cirrus Logic, Inc., Matrox Graphics, Inc., and Trident
Microsystems, Inc. The Company's principal competitors in the multimedia market
include the companies named in the preceding sentence and a number of smaller
companies which may have greater flexibility to address specific market needs.
Potential competitors in these markets include both large and emerging companies
that have announced plans to develop 3D graphics chips, including Intel
Corporation and Lockheed Martin Corporation, which have announced a joint
venture to develop such chips, and Texas Instruments Incorporated, which has
announced a development and marketing agreement with 3Dlabs Inc. To the extent
the Company expands its product line to add products with additional
functionality, such as audio, communications and system logic functions, it will
encounter
 
                                       17
<PAGE>   18
 
substantial competition from established semiconductor companies and may
experience competition from companies designing chips based on different
technologies, such as softwarecentric multimedia processors. Certain of the
Company's current and potential competitors have greater technical,
manufacturing, financial and marketing resources than the Company. The Company's
future success will be highly dependent upon the successful development and
timely introduction of new products that are responsive to market needs at
competitive prices. There can be no assurance that the Company will be able to
successfully develop or market any such products. See "Factors That May Affect
Results -- Substantial Competition."
 
LICENSES, PATENTS AND TRADEMARKS
 
     The Company has filed several United States patent applications for its
technology and to date has four issued United States patents. The Company
attempts to protect its trade secrets and other proprietary information through
agreements with its customers, suppliers, employees and consultants, and through
other security measures. Although the Company intends to protect its rights
vigorously, there can be no assurance that these measures will be successful or
that any issued patents will provide the Company with adequate protection with
respect to the covered products, technology or processes.
 
     The semiconductor and software industries are characterized by frequent
claims and related litigation regarding patent and other intellectual property
rights. The Company is party to various claims of this nature. Although the
ultimate outcome of these matters is not presently determinable, management
presently believes that the resolution of all such pending matters will not have
a material adverse effect on the Company's operating results. There can be no
assurance that third parties will not assert additional claims or initiate
litigation against the Company, its foundries or its customers with respect to
existing or future products. In addition, the Company may initiate claims or
litigation against third parties for infringement of the Company's proprietary
rights or to determine the scope and validity of the proprietary rights of the
Company or others. Litigation, such as the Brooktree litigation, by or against
the Company could result in significant expense to the Company and divert the
efforts of the Company's technical and management personnel, whether or not such
litigation is determined in favor of the Company. In the event of an adverse
result in any such litigation, the Company could be required to pay substantial
damages, cease the manufacture, use, sale, offer for sale and importation of
infringing products, expend significant resources to develop or obtain
non-infringing technology, discontinue the use of certain processes or obtain
licenses to the technology which is the subject of the litigation. There can be
no assurance that the Company would be successful in such development or
acquisition or that any such licenses, if available, would be available on
commercially reasonable terms, and any such development or acquisition could
require expenditures by the Company of substantial time and other resources. See
"Factors That May Affect Results -- Importance of Intellectual Property;
Litigation Involving Intellectual Property", "Legal Proceedings" and
"Management's Discussion and Analysis of Financial Condition and Results of
Operations."
 
     The Company has applied to the United States Patent and Trademark Office
for registration of a number of trademarks and also holds common law rights in a
number of trademarks. A U.S. registration has issued to the Company for the
marks Galileo, S3, S3 (stylized), S3 On Board, S3 Trio64, S3d (stylized), Trio,
True Acceleration, and ViRGE. The S3 corporate logo, S3 On Board design mark,
Aurora, the Plato family of marks, S3D, SDAC, SonicVibes, Streams Processor,
Innovations In Acceleration, No Compromise Acceleration, No Compromise
Integration, Cooperative Accelerator Architecture, DuoView, the Scenic family of
marks, SmartFilter, the Sonic family of marks, SonicVibes, the Trio family of
marks, TV-Tuner, the ViRGE family of marks, and the Vision family of marks are
trademarks of the Company. The Company has also applied for trademark
registration of some of its trademarks in certain foreign jurisdictions. There
can be no assurance that the Company will obtain the registrations for which it
has applied. Other trademarks referenced in this document are owned by their
respective companies.
 
     If the Company's use of a registered or unregistered trademark were found
to violate a third party's common law or statutory trademark rights, the
Company's business could be adversely affected. In addition, the laws of certain
countries in which the Company's products are or may be developed, manufactured
or sold, including Hong Kong, Japan and Taiwan, may not protect the Company's
products and intellectual property rights to the same extent as the laws of the
United States.
 
                                       18
<PAGE>   19
 
BACKLOG
 
     Sales of the Company's products are made pursuant to standard purchase
orders that are cancelable without significant penalties. In addition, purchase
orders are subject to price renegotiations and to changes in quantities of
products and delivery schedules in order to reflect changes in customers'
requirements and manufacturing availability. The Company's business, and to a
large and growing extent that of the entire semiconductor industry, is
characterized by short lead time orders and quick delivery schedules. In
addition, the Company's actual shipments depend on the manufacturing capacity of
the Company's suppliers and the availability of products from such suppliers. As
a result of the foregoing factors, the Company does not believe that backlog at
any given time is a meaningful indicator of future sales.
 
EMPLOYEES
 
     At December 31, 1996, the Company employed 636 individuals, of whom 86 were
employed in operations, 369 in research and development, 119 in sales, marketing
and technical support, and 62 in administration and other support functions.
Approximately 75% of these employees hold engineering degrees. Competition for
personnel in the semiconductor, software and the PC industry in general is
intense. The Company believes that its future success will depend, in part, on
its ability to continue to attract, train, motivate, retain and manage highly
skilled technical, marketing and management personnel. None of the Company's
employees is represented by a labor union or is subject to a collective
bargaining agreement. The Company believes that its relations with its employees
are good.
 
ITEM 2. PROPERTIES
 
     In December 1995, the Company entered into a limited partnership
arrangement with a developer to obtain a ground lease and develop and operate
the Company's future Santa Clara facilities. In January 1997, the Company
relocated its principal administrative, sales, marketing, research and
development facility consisting of approximately 300,000 square feet of space in
two buildings located in Santa Clara, California, the initial phase of the
development. This space is leased for an initial 12-year term. The Company has
an option to build an additional two buildings comprising approximately 300,000
square feet. The Company has vacated its previous Santa Clara facilities prior
to the expiration of their lease terms in order to occupy the new facilities.
The previous facilities consisted of approximately 159,000 square feet in four
buildings in Santa Clara, California pursuant to leases that expire between July
1996 and May 2000. The Company has sublet two of the buildings in 1996 and in
January 1997 terminated the lease on one building at no material cost. The
Company presently expects to sublease the remaining facility for the remaining
lease term that expires in May 1998 or negotiate a lease termination at no
material cost, although there can be no assurance that the Company will be able
to do so. The Company also leases office space in Georgia, Texas, Hong Kong,
Japan and Taipei, Taiwan, and a warehouse in Singapore in order to provide
sales, distribution and technical support to customers in the United States and
Asia. Additional research and development offices are also leased in Saratoga,
California, Colorado Springs, Colorado, and Bangalore, India. The facilities
currently leased are currently sufficient for the Company's operations and are
substantially fully utilized.
 
     In connection with the Company's investment in the real estate partnership,
in February 1997, the Company (together with the developer) has obtained
permanent nonrecourse financing for the construction of the Santa Clara
facilities. The Company is not a guarantor on the permanent financing.
 
ITEM 3. LEGAL PROCEEDINGS
 
     In October 1995, Brooktree filed a complaint against the Company in the
United States District Court for the Southern District of California, alleging
that the Company's current products infringe a Brooktree patent. In August 1996,
the Company and Brooktree entered into a settlement and license agreement
pursuant to which all claims and counterclaims between the parties were
dismissed. S3 made no admission of infringement or any other wrongdoing. The
settlement requires S3 to pay to Brooktree a license fee and royalties related
to certain product revenues over a five-year period, and each company has agreed
not to sue the other with respect to video and graphics products over such
five-year period. See "Factors That
 
                                       19
<PAGE>   20
 
May Affect Results -- Importance of Intellectual Property; Litigation Involving
Intellectual Property" and "Management's Discussion and Analysis of Financial
Condition and Results of Operations."
 
     Since November 1997, a number of complaints have been filed in federal and
state courts seeking an unspecified amount of damages on behalf of an alleged
class of persons who purchased shares of the Company's Common Stock at various
times between January 1, 1995 and November 3, 1997. The complaints name as
defendants the Company, certain of its officers and former officers and certain
directors of the Company, asserting that they violated federal and state
securities laws by misrepresenting and failing to disclose certain information
about the Company's business. In addition, certain shareholders have filed
derivative actions seeking recovery on behalf of the Company alleging, among
other things, breach of fiduciary duties by such individual defendants. The
Company has not formally responded to these complaints. While management intends
to defend the actions against the Company vigorously, there can be no assurance
that an adverse result or settlement with regards to such lawsuits would not
have a material adverse effect on the Company's financial condition or results
of operations.
 
     The Company has received from the United States Securities and Exchange
Commission a request for information relating to the Company's recent
restatement announcement. The Company has responded and intends to continue to
respond to such requests.
 
     The semiconductor and software industries are characterized by frequent
litigation regarding patent and other intellectual property rights. The Company
is party to various claims of this nature. Although the ultimate outcome of
these matters is not presently determinable, management believes that the
resolution of all such pending matters will not have a material adverse effect
on the Company's financial position or results of operations.
 
ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS
 
     Not applicable.
 
EXECUTIVE OFFICERS OF THE REGISTRANT
 
     The executive officers of the Company and their ages as of March 28, 1997
are as follows:
 
<TABLE>
<CAPTION>
                   NAME              AGE
        ---------------------------  ----
        <S>                          <C>     <C>
        Diosdado P. Banatao........   50     Chairman of the Board
        Gary J. Johnson............   37     President and Chief Executive Officer
        G. Ven Venkatesh...........   39     Executive Vice President
        Harry L. Dickinson.........   49     Sr. Vice President of Sales
        Paul G. Franklin...........   54     Sr. Vice President of Operations
        Neal D. Margulis...........   33     Sr. Vice President of Research and Technology
        Ronald T. Yara.............   50     Sr. Vice President of Strategic Marketing and
                                             Secretary
</TABLE>
 
     Mr. Banatao co-founded the Company and has served on a full-time basis as
Chairman of the Board since January 1992. Mr. Banatao also served as President
and Chief Executive Officer of the Company from its inception until January
1992. From December 1984 to December 1988, Mr. Banatao held various executive
level positions at Chips & Technologies, Inc., a semiconductor company he
co-founded, most recently as Vice President and General Manager of the Advanced
Products Operation. From February 1984 to December 1984, Mr. Banatao served as
Chief Technical Officer and Vice President of Engineering of Mostron, Inc., a
single-board computer design company. From June 1981 to February 1984, he served
as Director of Logic Products at Seeq Technology, Inc. a semiconductor
manufacturer. Mr. Banatao holds a B.S.E.E. from the Mapua Institute of
Technology and an M.S. in electrical engineering and computer science from
Stanford University.
 
     Mr. Johnson, President and Chief Executive Officer, joined the Company in
July 1994. From 1986 to June 1994, Mr. Johnson held various positions at
National Semiconductor Corporation, a semiconductor
 
                                       20
<PAGE>   21
 
manufacturer, including Managing Director/General Manager of the Wireless
Networking Group, Operations and Marketing Director of the Wireless
Communications Group and other senior marketing positions. From
 
                                       21
<PAGE>   22
 
1975 to 1986, he held various engineering positions at British
Telecommunications, most recently Systems Development Manager. Mr. Johnson holds
a B.Sc., CEng from Leicester Polytechnic, UK, and is a member of I.E.E. and
I.E.E.E.
 
     Mr. Franklin, Senior Vice President of Operations, became an employee of
the Company in September 1992. From March 1991 to September 1992 he was a
consultant to the Company. Mr. Franklin was a consultant for a number of
semiconductor companies from January 1990 through March 1991. From March 1986 to
December 1989, Mr. Franklin was Vice President of Operations of Actel
Corporation, a supplier of field programmable gate arrays. Prior to 1986 Mr.
Franklin held various management positions at Monolithic Memories Inc., a
supplier of semiconductor memories and programmable logic.
 
     Mr. Margulis, Senior Vice President of Research and Technology, joined the
Company in December 1989 and has held various engineering and marketing
positions. Prior to joining the Company, Mr. Margulis held various positions at
Intel Corporation, a semiconductor and system manufacturer, in the
microprocessor group. His positions included design engineering and most
recently Chief Applications Engineer for high performance processors. He earned
a B.S.E.E. from the University of Vermont.
 
     Mr. Yara co-founded the Company and is currently Senior Vice President,
Strategic Marketing and Secretary. From the inception of the Company in 1989
until December 1993, he served as Vice President, Marketing. From December 1984
to December 1989, Mr. Yara held various positions at Chips & Technologies, Inc.,
a semiconductor company he co-founded, most recently as Vice President of
Business Development. From February 1975 to 1984, Mr. Yara served in various
positions at Intel Corporation, most recently as Product Marketing Manager of
Communication Products. He earned a B.S.E.E. from Purdue University and an
M.S.E.E. from the University of Santa Clara.
 
                                    PART II
 
ITEM 5. MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER MATTERS
 
     The Company's Common Stock is traded on the Nasdaq National Market under
the symbol SIII. See "Selected Quarterly Consolidated Data" on page 47 for the
range of high and low closing sales prices for the Common Stock on the Nasdaq
National Market, as reported by Nasdaq.
 
     On September 18 and September 20, 1996, the Company completed the sale of
$90.0 million and $13.5 million aggregate principal amount of 5 3/4% Convertible
Subordinated Notes due 2003 (the "Notes"). The Notes are convertible at the
option of the holder into shares of Common Stock of the Company, at any time
prior to redemption or maturity, at a conversion price of $19.22 per share
(equal to a conversion rate of 52.0291 shares per $1,000 principal amount of
Notes and representing in the aggregate 5,385,015 shares), subject to adjustment
under certain circumstances.
 
     The Notes were sold by the Company to Lehman Brothers Inc., PaineWebber
Incorporated and Cowen & Company, as initial purchasers (the "Initial
Purchasers"), in a private placement in reliance upon Section 4(2) of the
Securities Act of 1993 (the "Securities Act") and Regulation D promulgated under
the Securities Act. The aggregate offering price of the Notes was $103.5 million
and the aggregate discount to the Initial Purchasers was $3.1 million.
 
     The Company has been advised that the Initial Purchasers resold $97.05
million aggregate principal amount of the Notes to "qualified institutional
buyers" in reliance on Rule 144A under the Securities Act, $3.35 million
aggregate principal amount of the Notes to a limited number of institutions that
are "accredited investors" within the meaning of Rule 501(a)(1), (2), (3) or (7)
under the Securities Act, and $3.1 million aggregate principal amount of the
Notes in sales outside the United States to persons other than U.S. persons in
reliance upon Regulation S under the Securities Act.
 
                                       22
<PAGE>   23
 
ITEM 6. SELECTED CONSOLIDATED FINANCIAL DATA
 
<TABLE>
<CAPTION>
                                                           YEARS ENDED DECEMBER 31,
                                         ------------------------------------------------------------
                                             (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS AND RATIOS)
                                             1996           1995        1994        1993       1992
                                         -------------    --------    --------    --------    -------
                                         (AS RESTATED)
<S>                                      <C>              <C>         <C>         <C>         <C>
STATEMENT OF INCOME DATA
Net sales..............................    $ 439,243      $316,309    $140,309    $112,969    $30,621
Gross margin(1)........................      172,876       126,542      42,334      47,309     15,332
Research and development expenses......       63,382        42,080      17,913      11,539      4,512
Selling, marketing and administrative
  expenses.............................       48,800        33,510      18,310      12,500      6,066
Income from operations.................       60,694        50,952       6,111      23,270      4,754
Income before cumulative effect of
  accounting change....................       41,588        35,374       5,502      15,120      4,447
Net income(2)..........................    $  41,588      $ 35,374    $  5,502    $ 18,620    $ 4,447
Per share amounts:
Income before cumulative effect of
  accounting change
  Primary..............................    $    0.82      $   0.75    $   0.14    $   0.41    $  0.16
  Assuming full dilution(3)............    $    0.81      $   0.75    $   0.14    $   0.41    $  0.16
Net income
  Primary..............................    $    0.82      $   0.75    $   0.14    $   0.50    $  0.16
  Assuming full dilution(3)............    $    0.81      $   0.75    $   0.14    $   0.50    $  0.16
Common and equivalent shares used in
  computing per share amount
  Primary..............................       50,929        47,013      39,614      37,472     28,662
  Assuming full dilution(3)............       52,733        47,013      39,614      37,472     28,662
Ratio of earnings to fixed
  charges(4)...........................       32.92x            --     165.98x     137.34x     19.45x
BALANCE SHEET DATA
Cash and equivalents...................    $  94,616      $ 69,289    $ 25,772    $ 22,538    $ 5,583
Short-term investments.................       62,768        24,630       8,800      21,997         --
Working capital........................      225,550       144,620      59,727      55,057      6,370
Total assets...........................      485,172       321,643      89,460      81,660     15,600
Long-term obligations..................       20,852        24,761         813         384      1,179
Convertible subordinated notes.........      103,500            --          --          --         --
Redeemable convertible preferred
  stock................................           --            --          --          --     16,761
Stockholders' equity (deficiency)......    $ 260,321      $205,864    $ 68,878    $ 60,985    $(9,938)
</TABLE>
 
---------------
 
(1) Gross margin was adversely impacted in 1994 by a pre-tax $9.9 million charge
    for adjusting the valuation of the Company's non-integrated 32-bit
    inventory.
 
(2) Includes the cumulative effect of adopting SFAS 109 in 1993 which increased
    net income by $3.5 million ($0.09 per share).
 
(3) Fully diluted earnings per share includes the effect of incremental shares
    issuable upon the conversion of the convertible subordinated notes and an
    adjustment to net income for the interest expense (net of income taxes)
    related to the notes.
 
(4) For purposes of calculating the ratio of earnings to fixed charges, (i)
    earnings consist of consolidated income before income taxes plus fixed
    charges and (ii) fixed charges consist of interest expense incurred and the
    portion of rental expense under operating leases deemed by the Company to be
    representative of the interest factor. The Company had no fixed charges in
    1995.
 
                                       23
<PAGE>   24
 
ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
OF OPERATIONS
 
     When used in this discussion, the words "expects," "anticipates,"
"estimates" and similar expressions are intended to identify forward-looking
statements. Such statements, which include statements concerning the timing of
availability and functionality of products under development, product mix,
trends in average selling prices, trends in the PC market, the percentage of
export sales and sales to strategic customers and the availability and cost of
products from the Company's suppliers, are subject to risks and uncertainties,
including those set forth below and in Item 1 of this Report under the caption
"Business -- Factors That May Affect Results," that could cause actual results
to differ materially from those projected. These forward-looking statements
speak only as of the date hereof. The Company expressly disclaims any obligation
or undertaking to release publicly any updates or revisions to any
forward-looking statements contained herein to reflect any change in the
Company's expectations with regard thereto or any change in events, conditions
or circumstances on which any statement is based.
 
     As a result of the restatement of the Company's financial statements for
1996, certain financial statement and related disclosures contained in this item
reflect, where appropriate, changes from that which appeared in the Company's
originally filed Form 10-K for 1996 in order to conform to this item to the
restatement. Other general information , which was presented in the originally
filed Form 10-K as of the March 31, 1997 filing date or earlier, has not been
updated in this item.
 
RESULTS OF OPERATIONS
 
     The following table sets forth for the years indicated certain financial
data as a percentage of net sales:
 
<TABLE>
<CAPTION>
                                                             YEARS ENDED DECEMBER 31,
                                                         ---------------------------------
                                                                           1995      1994
                                                             1996          -----     -----
                                                         -------------
                                                         (AS RESTATED)
        <S>                                              <C>               <C>       <C>
        Net sales......................................       100.0%       100.0%    100.0%
        Cost of sales..................................        60.6         60.0      69.8
                                                              -----        -----     -----
        Gross margin...................................        39.4         40.0      30.2
        Operating expenses:
          Research and development.....................        14.4         13.3      12.8
          Selling, marketing and administrative........        11.1         10.6      13.0
                                                              -----        -----     -----
                  Total operating expenses.............        25.5         23.9      25.8
                                                              -----        -----     -----
        Income from operations.........................        13.9         16.1       4.4
        Other income, net..............................         0.5          1.4       0.5
                                                              -----        -----     -----
        Income before income taxes.....................        14.4         17.5       4.9
        Provision for income taxes.....................         4.9          6.3       1.0
                                                              -----        -----     -----
        Net income.....................................         9.5%        11.2%      3.9%
                                                              =====        =====     =====
</TABLE>
 
     The Company's operating results have historically been, and will continue
to be, subject to quarterly and other fluctuations due to a variety of factors,
including changes in pricing policies by the Company, its competitors or its
suppliers, anticipated and unanticipated decreases in unit average selling
prices of the Company's products, availability and cost of products from the
Company's suppliers, changes in the mix of products sold and in the mix of sales
by distribution channels, the gain or loss of significant customers, new product
introductions by the Company or its competitors, market acceptance of new or
enhanced versions of the Company's products, seasonal customer demand, and the
timing of significant orders.
 
     The Company's operating results may fluctuate from those in prior periods
or may be adversely affected in periods in which it is undergoing a product line
transition in which production and sales of new products are ramping up and in
which existing products are under extreme price pressures due to competitive
factors. If new products are not brought to market in a timely manner or do not
address market needs or performance requirements, then the Company's operating
results will be adversely affected. As a result of the foregoing, the Company's
operating results and stock price may be subject to significant volatility,
particularly on a quarterly
 
                                       24
<PAGE>   25
 
basis. Any shortfall in net sales or net income from levels expected by
securities analysts could have an immediate and significant adverse effect on
the trading price of the Company's Common Stock.
 
NET SALES
 
     The Company's net sales to date have been generated from the sale of its
graphics and multimedia accelerators. The Company's products are used in, and
its business is dependent on, the personal computer industry with sales
primarily in the U.S., Asia, and Europe. Net sales were $439.2 million in 1996,
a 39% increase above the $316.3 million in 1995. Net sales increased in 1996
primarily as a result of the addition of the ViRGE product line and strong
demand for the Company's 64-bit Trio products that resulted in increased unit
shipments. The increased sales of the ViRGE and Trio family of accelerators was
partially offset by a decrease in the 64-bit Vision family of accelerators,
which has decreased significantly as the Company transitioned to sales of its
ViRGE family of 2D/3D accelerators. The Company expects that the percentage of
its net sales represented by any one product or type of product may change
significantly from period to period as new products are introduced and existing
products reach the end of their product life cycles. The increase in unit
shipments was partially offset by lower overall average selling prices for all
the product families. Due to competitive price pressures, the Company's products
experience declining unit average selling prices over time, which at times can
be substantial.
 
     Net sales were $316.3 million in 1995, a 125% increase above the $140.3
million in 1994. Net sales increased in 1995 primarily due to market demand for
the Company's 64-bit products, increased product availability from the Company's
qualified independent foundries and the addition of several new products to the
Company's product line. The increase in unit shipments was partially offset by
lower overall average selling prices.
 
     The pricing environment for 2D graphics accelerators, which accounted for a
majority of the Company's net sales in 1996, has recently experienced and is
expected to continue to experience increasing pricing pressures due in part to
the alleviation of supply constraints that contributed to more stable pricing in
1995 and to aggressive pricing from certain of the Company's competitors. In
particular, the Company's Trio family of integrated 2D accelerators experienced
significant decreases in average selling prices in 1996. The Company expects
that the graphics accelerator market will transition from 2D acceleration to 3D
acceleration, and the Company has introduced its ViRGE family of 2D/3D
accelerators in response to this expected transition. As a result of the entry
of competitors into the 3D acceleration market, the Company anticipates that it
may experience increased pricing pressures on average selling prices for the
ViRGE family of 2D/3D accelerators. If the transition occurs slower than
expected, if the Company's graphic products do not achieve market acceptance, or
if the pricing pressures increase, then the Company's operating results could be
adversely affected.
 
     Export sales accounted for 58%, 44%, and 42% of net sales in 1996, 1995,
and 1994 respectively. Approximately 16% and 45% of export sales were shipped to
Hong Kong and Taiwan, respectively and 37% of export sales in 1996 were to
affiliates of United States customers. The Company expects that export sales
will continue to represent a significant portion of net sales, although there
can be no assurance that export sales as a percentage of net sales will remain
at current levels. All sale transactions are denominated in U.S. dollars.
 
     One customer accounted for 16% and 17% of net sales in 1996 and 1995
respectively. Another customer accounted for 15% of net sales in 1996. One
customer accounted for 12% of net sales in 1995. Two customers accounted for 19%
and 16% of net sales in 1994. The Company expects a significant portion of its
future sales to remain concentrated within a limited number of strategic
customers. There can be no assurance that the Company will be able to retain its
strategic customers or that such customers will not otherwise cancel or
reschedule orders, or in the event of canceled orders, that such orders will be
replaced by other sales. In addition, sales to any particular customer may
fluctuate significantly from quarter to quarter. The occurrence of any such
events or the loss of a strategic customer could have a material adverse effect
on the Company's operating results.
 
     The occurrence of any supply problems for the Company's products may
adversely affect the rate of growth in net sales. Net sales may also be
adversely affected by delays in the production ramp of customers'
 
                                       25
<PAGE>   26
 
new programs and systems which incorporate the Company's products. In addition,
the Company generally ships more product in the third month of each quarter than
in either of the first two months of the quarter, with shipments in the third
month higher at the end of the month. This pattern, which is common in the
semiconductor industry, is likely to continue. The concentration of sales in the
last month of the quarter may cause the Company's quarterly results of
operations to be more difficult to predict. Moreover, a disruption in the
Company's production or shipping near the end of a quarter could materially
reduce the Company's net sales for that quarter. The Company's reliance on
outside foundries and independent assembly and testing houses reduces the
Company's ability to control, among other things, delivery schedules.
 
GROSS MARGIN
 
     Gross margin percentage was 39% and 40% in 1996 and 1995, respectively. The
gross margin in 1996 was impacted by decreases in overall average selling prices
of the 64-bit Trio family and ViRGE family of accelerators, offset by the
decrease in the unit average costs resulting from the Company's foundries'
conversion to 8-inch wafers and 0.45 micron technology and changes in the
pricing strategies from independent foundries for finished goods inventory due
to the alleviation of supply constraints in 1996 and shift in product mix from
the Vision products to the ViRGE products.
 
     In the future, the Company's gross margin percentages may be affected by
increased competition and related decreases in the unit average selling prices
(particularly with respect to older generation products), timing of volume
shipments of new products, the availability and cost of products from the
Company's suppliers, changes in the mix of products sold, the profitability of
the USC joint venture (the Company recognizes its proportionate share of USC
profits and losses), the extent to which the Company forfeits or utilizes it
production capacity rights with TSMC, the extent to which the Company will incur
additional licensing fees and shifts in sales mix between add-in card and
motherboard manufacturers and systems OEMs.
 
     Gross margin percentage increased to 40% in 1995 from 30% in 1994. The
gross margin percentage increase in 1995 was primarily due to the gross margin
in 1994 being adversely impacted by a pre-tax $9.9 million charge for adjusting
the valuation of the Company's non-integrated 32-bit inventory to reflect a
decline in its value and to a lesser extent to increase the reserve for excess
inventory for those products. The market value of the Company's non-integrated
32-bit products declined primarily because competitors' integrated 32-bit
accelerator products offered a more competitive solution. Additionally, the 1995
gross margin increased as the Company achieved proportionately greater decreases
in unit average costs compared to decreases in overall average selling prices.
The unit average cost decreases were principally the result of changes in the
Company's design method and manufacturing strategy and shifts to lower cost
foundries.
 
     The Company must order products and build inventory substantially in
advance of product shipments and, because the markets for the Company's products
are volatile and its products are subject to rapid technological and price
changes, there is a risk that the Company will forecast incorrectly and produce
excess or insufficient inventories of particular products. The Company's
customers' ability to reschedule or cancel orders without significant penalty
could adversely affect the Company's operating results, as the Company may be
unable to adjust its purchases from its independent foundries to match such
customers' changes and cancellations. To the extent the Company produces excess
or insufficient inventories of particular products, the Company's operating
results could be adversely affected.
 
RESEARCH AND DEVELOPMENT EXPENSES
 
     The Company has made and intends to continue to make significant
investments in research and development to remain competitive by developing new
and enhanced products. Research and development expenses were $63.4 million in
1996, $42.1 million in 1995 and $17.9 million in 1994. Research and development
spending increases reflect additions to the Company's engineering staff and
initial product verification and nonrecurring engineering expenses related to
the introduction of new products. Research and development spending is expected
to increase in absolute dollars in 1997 as a result of product development
activities currently underway for the desktop, mobile and home PC markets with a
focus on video, 3D, audio and communications.
 
                                       26
<PAGE>   27
 
     Products in the Company's market typically have a life cycle of 12 to 18
months. The successful development and commercialization of new products
required to replace or supplement existing products involve many risks,
including the identification of new product opportunities, the successful and
timely completion of the development process, and the selection of the Company's
products by leading systems suppliers and motherboard and add-in card
manufacturers for design into their products. There can be no assurance that the
Company will successfully identify new product opportunities and develop and
bring to the market in a timely manner successful new products, that products or
technologies developed by others will not render the Company's products
noncompetitive, or that the Company's products will be selected for design into
its customers' products. In addition, it is possible that the Company's products
may be found defective after the Company has already shipped significant volume
production. There can be no assurance that the Company would be able to
successfully correct such problems or that such corrections would be acceptable
to customers. The occurrence of any such events would have a material adverse
effect on the Company's operating results.
 
SELLING, MARKETING AND ADMINISTRATIVE EXPENSES
 
     Selling, marketing and administrative expenses were $48.8 million in 1996,
$33.5 million in 1995, and $18.3 million in 1994. Selling and marketing costs
have increased from year to year as a result of additional personnel, increased
commissions associated with higher sales levels and increased marketing costs
associated with the introduction of new products. Administrative costs have
increased due to the hiring of additional personnel necessary to support the
increased level of operations and the litigation costs in defending the
Brooktree lawsuit, which was settled in August 1996. The Company anticipates
that selling, marketing and administrative expenses will increase in absolute
dollars in 1997.
 
OTHER INCOME, NET
 
     Other income, net, decreased in 1996 to $2.2 million from $4.5 million in
1995. The decrease is attributable to the interest expense incurred on $103.5
million aggregate principal amount of convertible subordinated notes, which were
issued by the Company in September 1996. Other income, net, increased in 1995 to
$4.5 million from $0.8 million in 1994. Other income, net, increased in 1995 due
to the higher average amounts of cash and short-term investments as a result of
the net proceeds of $89.8 million from a follow-on common stock offering
completed in May 1995.
 
INCOME TAXES
 
     The Company's effective income tax rate was 34% in 1996, 36% in 1995 and
21% in 1994. The 1996 tax rate was lower due to an increase in tax credits as a
result of the increase in research and development expenses in absolute dollars.
In 1995, the effective income tax rate was higher than the federal statutory
rate due to state income taxes partially offset by research and development
credits. The 1994 tax rate was lower than the federal statutory rate in 1994 as
research and development tax credits had a greater impact in 1994 due to the
lower pre-tax income as a result of the pre-tax charge of $9.9 million discussed
above.
 
LIQUIDITY AND CAPITAL RESOURCES
 
     Cash, cash equivalents and short-term investments increased by $63.5
million in 1996 to $157.4 million from $93.9 million at the end of 1995. The
Company generated $34.2 million from operating activities in 1996, offset by
$120.5 million of cash used for investing activities, including the USC joint
venture, net purchases of investments and investments in property, plant and
equipment. In addition, the Company generated $111.6 million of cash from
financing activities, primarily due to the net proceeds of $100.1 million from
the issuance of convertible subordinated notes in the third quarter of 1996, net
borrowings on the equipment financing and line of credit, and $7.0 million of
proceeds from the sale of common stock under employee stock option and stock
purchase plans.
 
     Cash provided by operating activities was $34.2 million in 1996, an
increase of $10.4 million from $20.0 million in 1995. The increase was due to
net income, lower accounts receivable, and income taxes
 
                                       27
<PAGE>   28
 
payable, partially offset by an increase in inventory and prepaid expenses and
other and a decrease in accounts payable. The decrease in accounts receivable is
a result of greater linearity in sales in the fourth quarter of 1996 compared to
the fourth quarter of 1995, in which a substantial proportion of shipments
occurred in the third month of that quarter as compared to the first two months
of that quarter. The increase in inventory is primarily due to higher levels of
finished goods to support increased levels of business. Cash provided by
operating activities for 1995 was $20.0 million primarily due to an increase in
net income and to working capital management in 1995 as compared to 1994. The
Company experienced an increase in inventory and accounts receivable due to a
substantial increase in net sales. These increases were partially offset by
increases in accounts payable and accrued liabilities. Cash used for operating
activities in 1994 was $3.1 million, reflecting increases in inventories and
accounts receivable which more than offset other sources of cash provided by
operating activities. Accounts receivable increased primarily as a result of the
substantial increase in net sales in 1994 as compared to 1993 and to the
concentration of sales in December 1994. Continued expansion of the Company's
business is likely to require higher levels of accounts receivable and
inventory.
 
     Investing activities for the years ended December 31, 1996, 1995, and 1994
reflected property and equipment purchases of $23.4 million, $17.6 million, and
$7.6 million, respectively, sales and maturities of short-term investments, the
1996 investment in a real estate partnership for the Company's new headquarters
facility of $2.1 million and the investment in joint venture of $53.0 million,
as discussed below. Continued expansion of the Company's business may require
higher levels of capital equipment purchases, foundry investments and other
payments to secure manufacturing capacity.
 
     Financing activities provided cash of $111.6 million, $96.0 million, and
$0.9 million for 1996, 1995, and 1994, respectively. The increase in 1996
primarily reflects the offering of $103.5 million aggregate principal amount of
convertible subordinated notes completed in September 1996. Net proceeds from
the sale of the notes were approximately $100.1 million. The notes mature in
2003. Interest is payable semi-annually at 5  3/4% per annum. The notes are
convertible at the option of the note holders into the Company's common stock at
an initial conversion price of $19.22 per share, subject to adjustment.
Beginning in October 1999, the notes are redeemable at the option of the Company
at an initial redemption price of 102% of the principal amount. The Company has
reserved 5,385,016 shares of common stock (plus such additional number of shares
that may be required pursuant to the operation of anti-dilution provisions) for
the conversion of these notes. The 1995 amount primarily reflects the net
proceeds of the follow-on common stock offering completed in May 1995.
 
     In 1995, the Company entered into two long-term manufacturing capacity
arrangements. The Company entered into an agreement with UMC and Alliance
Semiconductor Corporation to form USC, a separate Taiwanese company, for the
purpose of building and managing a semiconductor manufacturing facility in the
Science Based Industrial Park in Hsin Chu City, Taiwan, Republic of China. The
Company invested $53.0 million in 1996 and $36.4 million in 1995 for its 23.75%
equity interest. The facility commenced production utilizing advanced submicron
semiconductor manufacturing processes in late 1996. The Company has the right to
purchase up to 31.25% of the output from the foundry. In addition, the Company
expanded and formalized its relationship with TSMC to provide additional
capacity over the 1996 to 2000 timeframe. The agreement with TSMC requires the
Company to make certain annual advance payments to be applied against the
following year's capacity. The Company has signed promissory notes to secure
these payments, which total $24.0 million as of December 31, 1996, over the term
of the agreement. The Company paid $7.2 million in 1996. See Notes 1, 9, and 11
of Notes to Consolidated Financial Statements.
 
     Working capital at December 31, 1996 and December 31, 1995 was $225.6
million and $144.6 million, respectively. At December 31, 1996 the Company's
principal sources of liquidity included cash and equivalents of $94.6 million
and $62.8 million in short-term investments. In addition, the Company has a
$25.0 million unsecured revolving line of credit that expires June 1, 1997. The
Company had no borrowings outstanding under the line of credit as of December
31, 1996. In addition, the Company has available two separate secured equipment
lines of credit totaling $10.0 million. The Company had $6.5 million outstanding
under these secured equipment lines of credit at December 31, 1996. The Company
must maintain certain financial covenants in connection with these lines of
credit. See Notes 9 of Notes to Consolidated Financial Statements. The Company
believes that its available funds and its anticipated funds from operations will
 
                                       28
<PAGE>   29
 
satisfy the Company's projected working capital and capital expenditure
requirements for at least the next 12 months, other than expenditures for future
potential manufacturing agreements.
 
     In order to obtain an adequate supply of wafers, especially wafers
manufactured using advanced process technologies, the Company has entered into
and will continue to consider various possible transactions, including the use
of "take or pay" contracts that commit the Company to purchase specified
quantities of wafers over extended periods, equity investments in, advances or
issuances of equity securities to wafer manufacturing companies in exchange for
guaranteed production, or the formation of joint ventures to own and operate or
construct wafer fabrication facilities. Manufacturing arrangements such as these
may require substantial capital investments, which may require the Company to
seek additional equity or debt financing. There can be no assurance that such
additional financing, if required, will be available when needed or, if
available, will be on satisfactory terms. In addition, the Company may, from
time to time, as business conditions warrant, invest in or acquire businesses,
technology or products that complement the business of the Company.
 
     The cyclical nature of the semiconductor industry periodically results in
shortages of advanced process wafer fabrication capacity such as the Company
experiences from time to time. The Company's ability to maintain adequate levels
of inventory is primarily dependent upon the Company obtaining sufficient supply
of products to meet future demand, and any inability of the Company to maintain
adequate inventory levels may adversely affect its relations with its customers.
In addition, because the Company must order products and build inventory
substantially in advance of product shipments, there is a risk that the Company
will forecast incorrectly and produce excess or insufficient inventories of
particular products because the Company's products are volatile and subject to
rapid technological and price changes. This inventory risk is heightened because
certain of the Company's key customers place orders with short lead times. The
Company's customers' ability to reschedule or cancel orders without significant
penalty could adversely affect the Company's liquidity, as the Company may be
unable to adjust its purchases from its independent foundries to match such
customer changes and cancellations. To the extent the Company produces excess or
insufficient inventories of particular products, the Company's operating results
could be adversely affected.
 
     In October 1995, Brooktree filed a complaint against the Company in the
United States District Court for the Southern District of California, alleging
that the Company's current products infringe a Brooktree patent. Such lawsuit
resulted in substantial expense to the Company to defend the action and diverted
the efforts of the Company's technical and management personnel. In August 1996,
the Company and Brooktree entered into a settlement and license agreement
pursuant to which all claims and counterclaims between the parties were
dismissed and the Company agreed to pay to Brooktree a license fee and royalties
related to certain product revenues over a five-year period. Such amount are not
expected to significantly impact future results of operations.
 
     Since November 1997, a number of complaints have been filed in federal and
state courts seeking an unspecified amount of damages on behalf of an alleged
class of persons who purchased shares of the Company's Common Stock at various
times between January 1, 1995 and November 3, 1997. The complaints name as
defendants the Company, certain of its officers and former officers and certain
directors of the Company, asserting that they violated federal and state
securities laws by misrepresenting and failing to disclose certain information
about the Company's business. In addition, certain shareholders have filed
derivative actions seeking recovery on behalf of the Company alleging, among
other things, breach of fiduciary duties by such individual defendants. The
Company has not formally responded to these complaints. While management intends
to defend the actions against the Company vigorously, there can be no assurance
that an adverse result or settlement with regards to such lawsuits would not
have a material adverse effect on the Company's financial condition or results
of operations.
 
     The Company has received from the United States Securities and Exchange
Commission a request for information relating to the Company's recent
restatement announcement. The Company has responded and intends to continue to
respond to such requests.
 
                                       29
<PAGE>   30
 
ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
 
                   INDEX TO CONSOLIDATED FINANCIAL STATEMENTS
 
<TABLE>
<CAPTION>
                                                                                     PAGE(S)
                                                                                     -------
<S>                                                                                  <C>
Independent Auditors' Report.......................................................       30
Consolidated Statements of Income for the years ended December 31, 1996 (As
  Restated), 1995, and 1994........................................................       31
Consolidated Balance Sheets as of December 31, 1996 (As Restated) and 1995.........       32
Consolidated Statements of Stockholders' Equity for the years ended December 31,
  1996 (As Restated), 1995, and 1994...............................................       33
Consolidated Statements of Cash Flows for the years ended December 31, 1996 (As
  Restated), 1995, and 1994........................................................       34
Notes to Consolidated Financial Statements.........................................  35 - 46
Selected Quarterly Consolidated Financial Data (Unaudited).........................       47
</TABLE>
 
                                       30
<PAGE>   31
 
                          INDEPENDENT AUDITORS' REPORT
 
Board of Directors and Stockholders
S3 Incorporated:
 
     We have audited the accompanying consolidated balance sheets of S3
Incorporated and subsidiaries as of December 31, 1996 and 1995, and the related
consolidated statements of income, stockholders' equity and cash flows for each
of the three years in the period ended December 31, 1996. Our audits also
included the financial statement schedule at Item 14(a)(2). These financial
statements and financial statement schedule are the responsibility of the
Company's management. Our responsibility is to express an opinion on these
financial statements and financial statement schedule based on our audits.
 
     We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
     In our opinion, such consolidated financial statements present fairly, in
all material respects, the financial position of S3 Incorporated and
subsidiaries at December 31, 1996 and 1995, and the results of their operations
and their cash flows for each of the three years in the period ended December
31, 1996 in conformity with generally accepted accounting principles. Also, in
our opinion, the financial statement schedule, when considered in relation to
the basic consolidated financial statements taken as a whole, presents fairly in
all material respects the information set forth therein.
 
     As discussed in Note 2, the accompanying 1996 financial statements have
been restated.
 
                                          DELOITTE & TOUCHE LLP
 
San Jose, California
January 17, 1997
(January 23, 1998 as to Note 2)
 
                                       31
<PAGE>   32
 
                                S3 INCORPORATED
 
                       CONSOLIDATED STATEMENTS OF INCOME
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
 
<TABLE>
<CAPTION>
                                                                  YEARS ENDED DECEMBER 31,
                                                           ---------------------------------------
                                                               1996            1995         1994
                                                           -------------     --------     --------
                                                           (AS RESTATED)
<S>                                                        <C>               <C>          <C>
Net sales................................................    $ 439,243       $316,309     $140,309
Cost of sales............................................      266,367        189,767       97,975
                                                              --------       --------     --------
Gross margin.............................................      172,876        126,542       42,334
Operating expenses:
  Research and development...............................       63,382         42,080       17,913
  Selling, marketing and administrative..................       48,800         33,510       18,310
                                                              --------       --------     --------
          Total operating expenses.......................      112,182         75,590       36,223
                                                              --------       --------     --------
Income from operations...................................       60,694         50,952        6,111
  Interest income........................................        4,328          4,481        1,020
  Interest expense.......................................       (1,971)            --          (42)
  Other income (expense).................................         (128)             8         (160)
                                                              --------       --------     --------
Other income, net........................................        2,229          4,489          818
                                                              --------       --------     --------
Income before income taxes...............................       62,923         55,441        6,929
Provision for income taxes...............................       21,335         20,067        1,427
                                                              --------       --------     --------
Net income...............................................    $  41,588       $ 35,374     $  5,502
                                                              ========       ========     ========
Per share amounts:
  Primary................................................    $    0.82       $   0.75     $   0.14
  Assuming full dilution.................................    $    0.81       $   0.75     $   0.14
Common and equivalent shares used in computing per share
  amounts:
  Primary................................................       50,929         47,013       39,614
  Assuming full dilution.................................       52,733         47,013       39,614
</TABLE>
 
          See accompanying notes to consolidated financial statements.
 
                                       32
<PAGE>   33
 
                                S3 INCORPORATED
 
                          CONSOLIDATED BALANCE SHEETS
            (DOLLARS IN THOUSANDS, EXCEPT SHARES AND PER SHARE DATA)
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                                             DECEMBER 31,
                                                                      ---------------------------
                                                                           1996            1995
                                                                      --------------     --------
                                                                      (AS RESTATED)
<S>                                                                   <C>                <C>
Current assets:
Cash and equivalents................................................     $ 94,616        $ 69,289
Short-term investments..............................................       62,768          24,630
Accounts receivable (net of allowances of $2,648 in 1996 and
  $1,614 in 1995)...................................................       76,120          84,210
Inventories.........................................................       53,466          43,293
Prepaid expenses and other..........................................       39,079          14,216
                                                                         --------        --------
          Total current assets......................................      326,049         235,638
Property and equipment -- net.......................................       34,047          20,678
Production capacity rights..........................................       14,400          24,000
Investment in joint venture.........................................       93,430          36,425
Other assets........................................................       17,246           4,902
                                                                         --------        --------
          Total.....................................................     $485,172        $321,643
                                                                         ========        ========
 
                              LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
Accounts payable....................................................     $ 51,160        $ 62,081
Notes payable.......................................................       17,802           9,200
Accrued liabilities.................................................       12,063          13,427
Deferred revenue....................................................       12,113              34
Income taxes payable................................................        7,361           6,276
                                                                         --------        --------
          Total current liabilities.................................      100,499          91,018
Notes payable.......................................................       14,400          24,000
Other liabilities...................................................        6,452             761
Convertible subordinated notes......................................      103,500              --
Commitments and contingencies (Notes 11 and 15)
Stockholders' equity:
  Preferred stock, $.0001 par value; 5,000,000 shares authorized;
     none outstanding...............................................           --              --
  Common stock, $.0001 par value; 70,000,000 shares authorized;
     48,331,794 and 46,797,327 shares outstanding in 1996 and
     1995...........................................................      169,411         156,474
  Unrealized gain (loss) on short-term investments..................          (54)             14
  Retained earnings.................................................       90,964          49,376
                                                                         --------        --------
          Total stockholders' equity................................      260,321         205,864
                                                                         --------        --------
          Total.....................................................     $485,172        $321,643
                                                                         ========        ========
</TABLE>
 
          See accompanying notes to consolidated financial statements
 
                                       33
<PAGE>   34
 
                                S3 INCORPORATED
 
                CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
                             (DOLLARS IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                       COMMON STOCK             UNREALIZED
                                  -----------------------     GAIN (LOSS) ON     RETAINED
                                    SHARES        AMOUNT       INVESTMENTS       EARNINGS      TOTAL
                                  ----------     --------     --------------     --------     --------
<S>                               <C>            <C>          <C>                <C>          <C>
Balance at January 1, 1994......  35,392,118     $ 52,485          $ --          $  8,500     $ 60,985
Exercise of stock options.......     858,382          367            --                --          367
Employee stock purchase plan....     206,174          706            --                --          706
Tax benefit of stock option
  transactions..................          --        1,285            --                --        1,285
Stock option compensation.......          --           62            --                --           62
Unrealized loss on investments
  ..............................          --           --           (29)               --          (29)
Net income......................          --           --            --             5,502        5,502
                                  ----------     --------          ----           -------     --------
Balance at December 31, 1994....  36,456,674       54,905           (29)           14,002       68,878
                                  ----------     --------          ----           -------     --------
Issuance of common stock, net of
  issuance costs of $599........   7,850,000       89,833            --                --       89,833
Exercise of stock options.......   2,330,911        2,969            --                --        2,969
Employee stock purchase plan....     159,742        1,222            --                --        1,222
Tax benefit of stock option
  transactions..................          --        7,508            --                --        7,508
Stock option compensation.......          --           37            --                --           37
Unrealized gain on
  investments...................          --           --            43                --           43
Net income......................          --           --            --            35,374       35,374
                                  ----------     --------          ----           -------     --------
Balance at December 31, 1995....  46,797,327      156,474            14            49,376      205,864
                                  ----------     --------          ----           -------     --------
Exercise of stock options.......   1,204,235        4,550            --                --        4,550
Employee stock purchase plan....     231,161        2,467            --                --        2,467
Tax benefit of stock option
  transactions..................          --        4,725            --                --        4,725
Stock compensation plan.........      99,071        1,195            --                --        1,195
Unrealized loss on investments
  ..............................          --           --           (68)               --          (68)
Net income (As Restated)........          --           --            --            41,588       41,588
                                  ----------     --------          ----           -------     --------
Balance at December 31, 1996 (As
  Restated).....................  48,331,794     $169,411          $(54)         $ 90,964     $260,321
                                  ==========     ========          ====           =======     ========
</TABLE>
 
          See accompanying notes to consolidated financial statements.
 
                                       34
<PAGE>   35
 
                                S3 INCORPORATED
 
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                  YEARS ENDED DECEMBER 31,
                                                           ---------------------------------------
                                                               1996            1995         1994
                                                           -------------     --------     --------
                                                           (AS RESTATED)
<S>                                                        <C>               <C>          <C>
OPERATING ACTIVITIES
  Net income.............................................    $  41,588       $ 35,374     $  5,502
  Adjustments to reconcile net income to net cash
     provided by (used for) operating activities:
     Deferred income taxes...............................      (10,469)        (3,334)        (255)
     Depreciation and amortization.......................       10,713          6,789        3,954
     Provision for inventory valuation adjustment........           --             --        9,914
     Production capacity rights..........................       (7,200)            --           --
     Deferred rent.......................................         (138)             6          387
     Stock compensation..................................        1,195             37           62
     Equity in income from joint venture.................       (3,999)            --           --
     Changes in assets and liabilities:
       Accounts receivable...............................        8,090        (50,458)     (10,299)
       Inventories.......................................      (10,173)       (35,089)     (12,859)
       Prepaid expenses and other........................       (6,975)        (2,830)        (459)
       Accounts payable..................................      (10,921)        45,832          (69)
       Accrued liabilities and other.....................        4,573         10,769       (1,134)
       Income taxes payable..............................        5,810         12,891        2,112
       Deferred revenue..................................       12,079             --           --
                                                              --------       --------     --------
  Net cash provided by (used for) operating activities...       34,173         19,987       (3,144)
                                                              --------       --------     --------
INVESTING ACTIVITIES
  Property and equipment purchases, net..................      (23,403)       (17,601)      (7,642)
  Purchases of short-term investments....................      (74,798)       (34,837)     (18,002)
  Sales/maturities of short-term investments.............       36,592         19,050       31,170
  Investment in real estate partnership..................       (2,100)            --           --
  Investment in joint venture............................      (53,006)       (36,425)          --
  Other assets...........................................       (3,778)        (2,681)         (36)
                                                              --------       --------     --------
  Net cash provided by (used for) investing activities...     (120,493)       (72,494)       5,490
                                                              --------       --------     --------
FINANCING ACTIVITIES
  Sale of common stock, net..............................        7,017         94,024        1,073
  Sale of convertible subordinated notes.................      103,500             --           --
  Debt issuance costs....................................       (3,370)            --           --
  Net borrowings (repayments) of notes payable...........       (2,000)         2,000           --
  Borrowings on equipment financing......................        6,500             --           --
  Repayments of capital leases...........................           --             --         (185)
                                                              --------       --------     --------
  Net cash provided by financing activities..............      111,647         96,024          888
                                                              --------       --------     --------
  Net increase in cash and equivalents...................       25,327         43,517        3,234
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD..............       69,289         25,772       22,538
                                                              --------       --------     --------
CASH AND EQUIVALENTS AT END OF PERIOD....................    $  94,616       $ 69,289     $ 25,772
                                                              ========       ========     ========
SUPPLEMENTAL CASH FLOW INFORMATION
  Interest paid..........................................    $     231             --     $     42
  Income taxes paid (refunded), net......................    $  20,483       $  9,105     $ (1,010)
SUPPLEMENTAL NONCASH INVESTING AND FINANCING ACTIVITIES
  Notes payable for production capacity rights...........           --       $ 31,200           --
</TABLE>
 
          See accompanying notes to consolidated financial statements.
 
                                       35
<PAGE>   36
 
                                S3 INCORPORATED
 
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                  YEARS ENDED DECEMBER 31, 1996, 1995 AND 1994
 
 1. ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES
 
  Organization
 
     S3 Incorporated was incorporated on January 9, 1989 and is a leading
supplier of high performance multimedia accelerator solutions. The Company's
products are used in, and its business is dependent on, the personal computer
industry with sales primarily in the U.S., Asia, and Europe (see Note 14). Its
products are manufactured, assembled and tested by independent wafer foundries
and contract manufacturers.
 
  Basis of Presentation
 
     The consolidated financial statements include the accounts of S3
Incorporated and its wholly-owned subsidiaries (collectively, the Company). All
significant intercompany balances and transactions have been eliminated.
Investments in entities in which the Company does not have control, but has the
ability to exercise significant influence over operating and financial policies
are accounted for by the equity method.
 
     The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities at the date of the financial
statements and the reported amounts of revenues and expenses during the
reporting period. Significant estimates include allowances for doubtful accounts
and customer returns, deferred tax assets, the useful lives of fixed assets and
intangible assets, inventory reserves and other reserves. Actual results could
differ from those estimates, and such differences may be material to the
financial statements.
 
  Cash Equivalents
 
     The Company considers all highly liquid debt investments purchased with a
remaining maturity of three months or less to be cash equivalents.
 
  Short-Term Investments
 
     Short-term investments represent debt securities which are stated at fair
value. The differences between amortized cost (cost adjusted for amortization of
premiums and accretion of discounts which are recognized as adjustments to
interest income) and fair value representing unrealized holding gains or losses
are recorded as a separate component of stockholders' equity until realized.
While the Company's intent is to hold debt securities to maturity, they are
classified as available-for-sale because the sale of such securities may be
required prior to maturity. Any gains and losses on the sale of debt securities
are determined on a specific identification basis.
 
  Inventories
 
     Inventories consist of work in process and finished goods and are stated at
the lower of cost (first-in, first-out) or market. The Company's products
typically experience short product life cycles and the Company estimates the
market value of its inventory based on anticipated selling prices adjusted for
completion and selling costs. Should the Company experience a substantial
unanticipated decline in selling price of its products and/or demand thereof, a
material valuation adjustment and corresponding charge to operations could
result.
 
     Required payments under a wafer supply agreement to secure future capacity
are capitalized and amortized to inventory costs as the related product is
received.
 
                                       36
<PAGE>   37
 
                                S3 INCORPORATED
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                  YEARS ENDED DECEMBER 31, 1996, 1995 AND 1994
 
  Property and Equipment
 
     Property and equipment are stated at cost. Depreciation is provided using
the straight-line method over estimated useful lives of three to five years.
Leasehold improvements are amortized using the straight-line method over the
shorter of the lease term or the assets useful lives.
 
  Long-Lived Assets
 
     Effective January 1, 1996, the Company adopted Statement of Financial
Accounting Standards ("SFAS") No. 121, "Accounting for the Impairment of
Long-Lived Assets and for Long-Lived Assets to Be Disposed Of." SFAS 121
requires recognition of impairment of long-lived assets in the event the net
book value of such assets exceeds the future undiscounted cash flows
attributable to such assets. The Company annually evaluates the recoverability
of its long-lived assets based on the estimated future undiscounted cash flows.
Adoption of SFAS No. 121 had no material effect on the Company's financial
statements.
 
  Wafer Fabrication Joint Venture
 
     Preproduction costs incurred by the wafer fabrication joint venture (see
Note 11) during construction and equipping of the facility were capitalized by
the Company and are being amortized over 5 years.
 
  Revenue Recognition
 
     Revenue from product sales direct to customers is generally recognized upon
shipment. Accruals for estimated sales returns and allowances are recorded at
the time of sale. Certain of the Company's sales are made to distributors under
agreements allowing price protection and rights of return on unsold products by
the distributors. The Company defers recognition of revenue on such sales until
the product is sold by the distributors.
 
  Concentration of Credit Risk
 
     Financial instruments which potentially subject the Company to
concentrations of credit risk consist primarily of cash equivalents, short-term
investments, trade accounts receivable and foreign exchange contracts. The
Company invests only in high credit quality short-term debt instruments and
limits the amount of credit exposure to any one entity. A majority of the
Company's trade receivables are derived from sales to manufacturers in the
computer industry. The Company performs ongoing credit evaluations of its
customers' financial condition and limits the amount of credit extended when
deemed necessary but generally requires no collateral. The Company maintains
reserves for potential credit losses, and all such losses to date have been
within management's expectations.
 
  Fair Value of Financial Instruments
 
     Financial instruments include cash equivalents and short-term investments
(see Note 3). Cash equivalents and short-term investments are stated at fair
market values based on quoted market prices. The fair value of the Company's
convertible subordinated notes approximated its carrying cost as of December 31,
1996.
 
  Research and Development Expenses
 
     Research and development is expensed as incurred.
 
                                       37
<PAGE>   38
 
                                S3 INCORPORATED
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                  YEARS ENDED DECEMBER 31, 1996, 1995 AND 1994
 
  Income Taxes
 
     The Company accounts for income taxes using the asset and liability
approach pursuant to SFAS No. 109, "Accounting for Income Taxes."
 
  Stock-Based Compensation
 
     The Company accounts for stock-based awards to employees using the
intrinsic value method in accordance with APB No. 25, Accounting for Stock
Issued to Employees. The Company adopted the disclosure requirements of SFAS No.
123, Accounting for Stock-Based Compensation (SFAS 123), which require the
disclosure of pro forma net income and earnings per share as if the Company
adopted the fair value-based method in measuring compensation expense as of the
beginning of fiscal 1995.
 
  Per share amounts
 
     Primary per share data is computed based on the weighted average number of
common and dilutive common equivalent shares outstanding. Common equivalent
shares include stock options and shares subscribed under the employee stock
purchase plan (computed using the treasury stock method). Fully diluted per
share data is computed using the most dilutive assumptions and by adjusting the
primary per share data and net income for the potential effect of the conversion
of the 5 3/4% Convertible Subordinated Notes (see Note 8) outstanding during the
period and the elimination of the related interest and deferred issue costs, net
of income taxes.
 
  Reclassifications
 
     Certain prior year amounts have been reclassified to conform to the current
year presentation.
 
 2. RESTATEMENT OF FINANCIAL STATEMENTS FOR PREVIOUS PERIODS
 
     Subsequent to the issuance of the Company's financial statements for the
year ended December 31, 1996, the Company discovered that its accounting
policies with respect to revenue recognition for international sales had not
been fully followed. The Company's policy is to defer recognition of revenue on
all sales to distributors until the period the product is sold by each
distributor to its customers. Based on its review of this matter, the Company
determined that in certain instances, revenue was recognized prematurely, prior
to sale by the Company's distributors. Accordingly the accompanying 1996
financial statements have been restated to properly defer revenue recognition on
products shipped to certain distributors.
 
                                       38
<PAGE>   39
 
                                S3 INCORPORATED
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                  YEARS ENDED DECEMBER 31, 1996, 1995 AND 1994
 
     The effects of such restatements are summarized as follows (in thousands
except per share amounts):
 
<TABLE>
<CAPTION>
                                                                         TWELVE MONTHS
                                                                             ENDED
                                                                         DECEMBER 31,
                                                                             1996
                                                                         -------------
        <S>                                                              <C>
        Net sales before restatement.................................      $ 465,378
        Net sales after restatement..................................      $ 439,243
        Cost of sales before restatement.............................      $ 281,013
        Cost of sales after restatement..............................      $ 266,367
        Net income before restatement................................      $  48,367
        Net income after restatement.................................      $  41,588
        Primary net income per common and equivalent share before
          restatement................................................      $    0.95
        Primary net income per common and equivalent share after
          restatement................................................      $    0.82
</TABLE>
 
<TABLE>
<CAPTION>
                                                                              AT
                                                                         DECEMBER 31,
                                                                             1996
                                                                         -------------
        <S>                                                              <C>
        Deferred tax asset before restatement........................      $  11,162
        Deferred tax asset after restatement.........................      $  15,872
        Total assets before restatement..............................      $ 480,462
        Total assets after restatement...............................      $ 485,172
        Deferred revenue before restatement..........................      $     624
        Deferred revenue after restatement...........................      $  12,113
        Total stockholders' equity before restatement................      $ 267,100
        Total stockholders' equity after restatement.................      $ 260,321
</TABLE>
 
 3. SHORT-TERM INVESTMENTS
 
     The fair value and the amortized cost of available-for-sale securities at
December 31, 1996 and 1995 are presented in the tables which follow. Fair values
are based on quoted market prices obtained from an independent broker.
Available-for-sale securities are classified as current assets as all maturities
are within one year. For each category of investment securities the table
presents gross unrealized holding gains and losses.
 
<TABLE>
<CAPTION>
                                                                             UNREALIZED     UNREALIZED
                                                   AMORTIZED     MARKET       HOLDING        HOLDING
                                                     COST         VALUE        GAINS          LOSSES
                                                   ---------     -------     ----------     ----------
                                                                     (IN THOUSANDS)
<S>                                                <C>           <C>         <C>            <C>
December 31, 1996:
Corporate Debt Securities........................   $41,634      $41,582        $  3           $ 55
Foreign Government Securities....................     2,698        2,697          --              1
Mortgage-Backed Securities.......................    14,269       14,272           4              1
Debt securities of states of the United States
  and political subdivisions of the states.......     4,221        4,217          --              4
                                                    -------      -------         ---            ---
          Total..................................   $62,822      $62,768        $  7           $ 61
                                                    =======      =======         ===            ===
</TABLE>
 
                                       39
<PAGE>   40
 
                                S3 INCORPORATED
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                  YEARS ENDED DECEMBER 31, 1996, 1995 AND 1994
 
<TABLE>
<CAPTION>
                                                                             UNREALIZED     UNREALIZED
                                                   AMORTIZED     MARKET       HOLDING        HOLDING
                                                     COST         VALUE        GAINS          LOSSES
                                                   ---------     -------     ----------     ----------
                                                                     (IN THOUSANDS)
<S>                                                <C>           <C>         <C>            <C>
December 31, 1995:
Corporate Debt Securities........................   $ 7,186      $ 7,182        $  2           $  6
U.S. Government Securities.......................     3,533        3,534           1             --
Mortgage-Backed Securities.......................    13,897       13,914          18              1
                                                    -------      -------         ---            ---
          Total..................................   $24,616      $24,630        $ 21           $  7
                                                    =======      =======         ===            ===
</TABLE>
 
 4. INVENTORIES
 
     Inventories consist of:
 
<TABLE>
<CAPTION>
                                                                  DECEMBER 31,
                                                               -------------------
                                                                1996        1995
                                                               -------     -------
                                                                 (IN THOUSANDS)
            <S>                                                <C>         <C>
            Work in process..................................  $22,556     $23,469
            Finished goods...................................   30,910      19,824
                                                               -------     -------
                      Total..................................  $53,466     $43,293
                                                               =======     =======
</TABLE>
 
 5. INVESTMENTS
 
  Investment in USC
 
     The Company has a 23.75% equity investment in the stock of United
Semiconductor Corporation (USC), which owns and operates a semiconductor
manufacturing facility in Taiwan. Operations in 1995 consisted primarily of
construction and other capitalizable preproduction activities and, therefore,
the 1995 results of operations for the entity were immaterial. Summarized
financial information of USC adjusted to conform with generally accepted
accounting principles in the United States for the entity at December 31, 1996
and 1995 is as follows (in thousands):
 
<TABLE>
<CAPTION>
                           RESULTS OF OPERATIONS                 DECEMBER 31, 1996
            ---------------------------------------------------  -----------------
            <S>                                                  <C>       <C>
            Sales..............................................            $60,656
            Net income.........................................             16,850
</TABLE>
 
<TABLE>
<CAPTION>
                                                                  DECEMBER 31,
                                                               -------------------
                           FINANCIAL POSITION                    1996       1995
            -------------------------------------------------  --------   --------
            <S>                                                <C>        <C>
            Current Assets...................................  $224,560   $144,031
            Noncurrent Assets................................   409,765     46,564
            Current Liabilities..............................    89,734      5,414
            Noncurrent Liabilities...........................   163,973        485
            Stockholders' Equity.............................   380,618    184,696
</TABLE>
 
 Interest in Partnership
 
     In 1995, the Company entered into a limited partnership arrangement with a
developer to obtain a ground lease and develop and operate the Company's future
Santa Clara facilities. The Company's investment of $2.1 million represents 50%
interest in Mission Real Estate L.P. (the partnership), in which the Company is
a limited partner.
 
                                       40
<PAGE>   41
 
                                S3 INCORPORATED
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                  YEARS ENDED DECEMBER 31, 1996, 1995 AND 1994
 
     In connection with the Company's investment in the real estate partnership,
the Company (together with the developer) is subject to recourse provisions for
the construction financing loan for up to $12.0 million. At December 31, 1996,
the Company was a guarantor with respect to $8.9 million incurred under the
construction financing loan agreement. Permanent nonrecourse financing has
subsequently been obtained. The Company is not a guarantor on the permanent
financing.
 
 6. PROPERTY AND EQUIPMENT
 
     Property and equipment consist of:
 
<TABLE>
<CAPTION>
                                                                 DECEMBER 31,
                                                             ---------------------
                                                               1996         1995
                                                             --------     --------
                                                                (IN THOUSANDS)
            <S>                                              <C>          <C>
            Machinery and equipment........................  $ 52,019     $ 29,108
            Furniture and fixtures.........................     2,690        2,422
            Leasehold improvements.........................       478          254
                                                             --------     --------
                      Total................................    55,187       31,784
            Accumulated depreciation and amortization......   (21,140)     (11,106)
                                                             --------     --------
            Property and equipment, net....................  $ 34,047     $ 20,678
                                                             ========     ========
</TABLE>
 
 7. ACCRUED LIABILITIES
 
     Accrued liabilities consist of:
 
<TABLE>
<CAPTION>
                                                                  DECEMBER 31,
                                                               -------------------
                                                                1996        1995
                                                               -------     -------
                                                                 (IN THOUSANDS)
            <S>                                                <C>         <C>
            Accrued compensation and benefits................  $10,462     $11,264
            Other............................................    1,601       2,163
                                                               -------     -------
                                                               $12,063     $13,427
                                                               =======     =======
</TABLE>
 
 8. CONVERTIBLE SUBORDINATED NOTES
 
     In September 1996, the Company completed a private placement of $103.5
million aggregate principal amount of convertible subordinated notes. The notes
mature in 2003. Interest is payable semi-annually at 5 3/4% per annum. The notes
are convertible at the option of the note holders into the Company's common
stock at an initial conversion price of $19.22 per share, subject to adjustment.
Beginning in October 1999, the notes are redeemable at the option of the Company
at an initial redemption price of 102% of the principal amount. The Company has
reserved 5,385,015 shares of common stock (plus such additional number of shares
that may be required pursuant to the operation of anti-dilution provisions) for
the conversion of these notes. Offering costs of approximately $3.4 million are
included in other assets and are amortized on a straight-line basis over the
term of the notes. In 1996, the Company recorded debt issuance cost amortization
of $0.1 million.
 
  9. LINE OF CREDIT AND NOTES PAYABLE
 
     The Company has a $25.0 million unsecured revolving line of credit that
expires June 1, 1997. Borrowings bear interest at the bank's prime rate (8.25%
at December 31, 1996). The most restrictive covenants under the agreement
require the Company, among other things, to maintain a minimum tangible net
worth of $224 million, a quick ratio of 1.15 to 1.0, maximum debt to tangible
net worth, as defined, of 1.25 to 1.0 and annual profitability. The Company was
in compliance with all financial covenants at December 31, 1996. The Company had
no borrowings outstanding under the line of credit as of December 31, 1996.
 
                                       41
<PAGE>   42
 
                                S3 INCORPORATED
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                  YEARS ENDED DECEMBER 31, 1996, 1995 AND 1994
 
     In addition, the Company has two separate secured equipment lines of credit
totaling $10.0 million. The Company had $6.5 million outstanding under these
secured equipment lines of credit at December 31, 1996. Borrowings bear interest
at the prime rate (8.25% at December 31, 1996) and the Company is required to
comply with the same financial covenants as its unsecured line of credit.
 
     In connection with a wafer supply agreement, the Company issued notes
payable to a supplier (see Note 11). The notes bear interest at 10.0% per annum
commencing on the individual notes' maturity date if such notes are not paid.
Future payments of these notes are as follows (in thousands):
 
<TABLE>
                      <S>                                        <C>
                      1997...................................    $ 9,600
                      1998...................................      9,600
                      1999...................................      4,800
                                                                 -------
                                                                 $24,000
                                                                 =======
</TABLE>
 
10. STOCKHOLDERS' EQUITY
 
  Common Stock
 
     In May 1995, the Company sold 7,850,000 shares of common stock in an
underwritten public offering at a price of $12.13 per share.
 
  Preferred Stock
 
     The number of shares of preferred stock authorized to be issued is
5,000,000 with a par value of $0.0001 per share. The preferred stock may be
issued from time to time in one or more series. The Board of Directors is
authorized to provide for the rights, preferences, privileges and restrictions
of the shares of such series. As of December 31, 1996, no shares of preferred
stock had been issued.
 
  Employee Stock Purchase Plan
 
     Under the Company's 1993 Employee Stock Purchase Plan (the "Plan")
1,400,000 shares of common stock are reserved for issuance pursuant thereto. The
Plan permits eligible employees to purchase shares at a price equal to 85% of
the lower of the fair market value at the beginning or end of the offering
period. At December 31, 1996, 597,077 shares have been issued under the Plan and
802,923 shares have been reserved for further issuance. The weighted average
fair value of those purchase rights granted in 1996 and 1995 was $6.97 and
$4.97, respectively. The Company's calculations were made using the
Black-Scholes option pricing model with the following weighted average
assumptions: expected life of 2 years for both years; expected interest rate of
6.1% and 5.6% for 1996 and 1995, respectively; expected volatility of 60% for
both years; and no dividends during the expected term.
 
  Stock Plan
 
     Under the Company's stock option plans at December 31, 1996, 17,040,057
shares of common stock have been authorized for the grant of incentive or
nonstatutory stock options and the direct award or sale of shares to employees,
directors and consultants. Incentive stock options must be granted at not less
than fair market value at the date of grant. The exercise price of nonstatutory
options and the share price for shares sold generally may be no less than 85% of
fair market value at the date of the grant or sale. At December 31, 1996,
9,614,249 shares of common stock are reserved for issuance under the plans and
694,150 shares were available for future grant.
 
                                       42
<PAGE>   43
 
                                S3 INCORPORATED
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                  YEARS ENDED DECEMBER 31, 1996, 1995 AND 1994
 
     A summary of stock option activity is as follows:
 
<TABLE>
<CAPTION>
                                                      NUMBER OF      WEIGHTED AVERAGE
                                                        SHARES       PRICE PER SHARE
                                                      ----------     ----------------
            <S>                                       <C>            <C>
            Balance, January 1, 1994................   5,256,132          $ 1.84
            Options granted.........................   3,951,600            4.88
            Options exercised.......................    (858,382)           0.45
            Options canceled........................  (1,540,596)           6.38
                                                      ----------
            Balance, December 31, 1994..............   6,808,754            2.75
            Options granted.........................   2,970,550           15.47
            Options exercised.......................  (2,330,911)           1.27
            Options canceled........................    (463,454)           6.61
                                                      ----------
            Balance, December 31, 1995..............   6,984,939            8.37
            Options granted.........................   6,538,362           12.09
            Options exercised.......................  (1,204,235)           3.83
            Options canceled........................  (3,398,967)          15.28
                                                      ----------
            Balance, December 31, 1996..............   8,920,099          $ 9.06
                                                      ==========
</TABLE>
 
     Options on 2,267,969, 2,030,259 and 1,717,140 shares were exercisable at
December 31, 1996, 1995 and 1994 with a weighted average exercise price of
$4.29, $3.51 and $0.69, respectively.
 
     These options generally vest over a period of four years and generally
become exercisable beginning 6 months from the date of employment or grant.
Options expire ten years from the date of grant. Common stock sold to employees,
directors and consultants under stock purchase agreements is subject to
repurchase at the Company's option upon termination of their employment or
services at the original purchase price. This right expires ratably over four
years. The Company repriced 2,713,657 options to $10.06, the market price on
July 15, 1996. The repriced options are treated as canceled and regranted,
however, they retain their original vesting terms.
 
  Stock Compensation Arrangement
 
     Pursuant to an incentive compensation plan for certain employees, the
Company issued 99,071 shares of its common stock in 1996 and is committed to
issue 99,071 shares of its common stock on June 30, 1997. The Company is
accruing the related compensation cost ratably over the periods.
 
  Additional Stock Plan Information
 
     As discussed in Note 1, the Company continues to account for its
stock-based awards using the intrinsic value method in accordance with
Accounting Principles Board No. 25, Accounting for Stock Issued to Employees and
its related interpretations. Accordingly, no compensation expense has been
recognized for employee stock option and purchase plan arrangements.
 
     Under SFAS 123, the fair value of stock-based awards to employees is
calculated through the use of option pricing models, even though such models
were developed to estimate the fair value of freely tradable, fully transferable
options without vesting restrictions, which significantly differ from the
Company's stock option awards. These models also require subjective assumptions,
including future stock price volatility and expected time to exercise, which
greatly affect the calculated values. Adoption of SFAS 123 is optional; however,
pro forma disclosures as if the Company adopted the cost recognition
requirements under SFAS 123 in 1995 are presented below.
 
                                       43
<PAGE>   44
 
                                S3 INCORPORATED
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                  YEARS ENDED DECEMBER 31, 1996, 1995 AND 1994
 
     The following table summarizes significant ranges of outstanding and
exercisable options at December 31, 1996:
 
<TABLE>
<CAPTION>
                          OPTIONS OUTSTANDING
                    --------------------------------
                                    WEIGHTED AVERAGE                                OPTIONS EXERCISABLE
                                       REMAINING                              --------------------------------
    RANGE OF          NUMBER        CONTRACTUAL LIFE     WEIGHTED AVERAGE       NUMBER        WEIGHTED AVERAGE
EXERCISE PRICES     OUTSTANDING          (YRS)            EXERCISE PRICE      EXERCISABLE      EXERCISE PRICE
----------------    -----------     ----------------     ----------------     -----------     ----------------
<S>                 <C>             <C>                  <C>                  <C>             <C>
 $ 0.12 - $ 3.44     1,326,821            6.04                $ 1.83            1,140,236          $ 1.60
   3.56 -   8.72     1,843,521            7.67                  5.64              870,111            5.56
   8.97 -  10.06     3,576,941            9.00                 10.05               54,095            9.77
  10.13 -  23.38     2,172,816            9.33                 14.74              203,527           12.49
                    -----------                                               -----------
 $ 0.12 - $23.38     8,920,099            8.37                $ 9.06            2,267,969          $ 4.29
</TABLE>
 
     The weighted average fair value at date of grant for options granted during
1996, 1995 and 1994 was $12.09, $15.65 and $4.49 per option, respectively. The
Company's calculations were made using the Black-Scholes option pricing model
with the following weighted average assumptions:
 
<TABLE>
<CAPTION>
                                             1996                           1995
                                  ---------------------------    ---------------------------
        <S>                       <C>                            <C>
        Expected Life...........  6 months following vesting     6 months following vesting
        Interest Rate...........  6.1%                           5.6%
        Volatility..............  60%                            60%
        Dividend Yield..........  0%                             0%
</TABLE>
 
     The Company's calculations are based on a multiple option valuation
approach and forfeitures are recognized as they occur.
 
     If the computed fair values of the 1996 and 1995 awards had been amortized
to expense over the vesting period of the awards, pro forma net income would
have been $28.5 million ($0.56 fully diluted earnings per share and $0.58
primary earnings per share) in 1996 and $30.3 million ($0.66 fully diluted and
primary earnings per share) in 1995. However, because options vest over several
years and grants prior to 1995 are excluded from these calculations, these
amounts may not be representative of the impact on future years' earnings,
assuming grants are made in those years.
 
11. LEASES AND COMMITMENTS
 
  Operating Leases
 
     The Company leases administrative facilities under operating leases that
expire in 2008. During 1995, the Company entered into a limited partnership
arrangement with a developer to obtain a ground lease and develop and operate
the Company's Santa Clara, California facilities. In January 1997, prior to the
expiration of the lease terms of the previous facilities, the Company relocated
its principal administrative facilities to the new Santa Clara facilities at
which time the Company's minimum operating lease payment of $369,000 commenced
for the initial 12 year term. The Company has sublet a portion of its previous
facilities for the remaining lease terms and has negotiated a lease termination
on another facility at no material cost. The Company presently expects to
sublease the remaining facility for the remaining lease term or negotiate a
lease termination at no material cost, although there can be no assurance that
the Company will be able to do so.
 
     The Company has been granted free rent periods under the leases on its
facilities in Santa Clara. The accompanying statements of income reflect rent
expense on a straight-line basis over the term of the leases. The difference
between straight-line rent expense and actual cash payments is recorded as
deferred rent.
 
                                       44
<PAGE>   45
 
                                S3 INCORPORATED
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                  YEARS ENDED DECEMBER 31, 1996, 1995 AND 1994
 
     Future minimum annual payments under operating leases are as follows:
 
<TABLE>
<CAPTION>
                                                                OPERATING LEASES
                                                                ----------------
                                                                 (IN THOUSANDS)
                <S>                                             <C>
                1997..........................................      $  6,545
                1998..........................................         6,117
                1999..........................................         5,630
                2000..........................................         4,898
                2001..........................................         4,426
                Thereafter....................................        30,979
                                                                     -------
                          Total minimum lease payments........      $ 58,595
                                                                     =======
</TABLE>
 
     The total of minimal rentals to be received in the future under
non-cancellable subleases is $4,496,000 as of December 31, 1996.
 
     Rent expense for 1996, 1995, and 1994 was $3,483,000, $2,002,000, and
$1,380,000, respectively.   Wafer Supply Agreements and Commitments
 
     During 1995, the Company entered into two long-term manufacturing capacity
arrangements. The Company entered into an agreement with United Microelectronics
Corporation (UMC) and Alliance Semiconductor Corporation to form USC, a separate
Taiwanese company, for the purpose of building and managing a semiconductor
manufacturing facility in the Science Based Industrial Park in Hsin Chu City,
Taiwan, Republic of China. The Company invested $36.4 million in 1995 and $53.0
in 1996 for its equity interest of 23.75%. The facility commenced production
utilizing advanced submicron semiconductor manufacturing processes in 1996. The
Company has the right to purchase up to 31.25% of the output from the foundry.
 
     In addition, in 1995 the Company expanded and formalized its relationship
with Taiwan Semiconductor Manufacturing Company (TSMC) to provide additional
capacity over the 1996 to 2000 timeframe. The agreement with TSMC requires the
Company to make certain annual advance payments to be applied against the
following year's capacity. The Company has signed promissory notes to secure
these payments over the term of the agreement (see Note 9). In 1996 and 1995,
the Company paid $7.2 million and $1.2 million, respectively. At December 31,
1996, the remaining advance payments (and corresponding promissory notes)
totaled $24.0 million ($9.6 million in prepaid expenses and $14.4 million in
production capacity rights).
 
     In the ordinary course of business, the Company places purchase orders with
its wafer suppliers based on its existing and anticipated customer orders for
its products. Should the Company experience a substantial unanticipated decline
in the selling price of its products and/or demand thereof, it could result in a
material loss on such purchase commitments.
 
                                       45
<PAGE>   46
 
                                S3 INCORPORATED
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                  YEARS ENDED DECEMBER 31, 1996, 1995 AND 1994
 
12. INCOME TAXES
 
     The provision for income taxes consists of (in thousands):
 
<TABLE>
<CAPTION>
                                                            YEARS ENDED DECEMBER 31,
                                                      ------------------------------------
                                                                         1995        1994
                                                          1996          -------     ------
                                                      -------------
                                                      (AS RESTATED)
        <S>                                           <C>               <C>         <C>
        Current tax expense:
          Federal...................................    $  27,838       $20,796     $1,447
          State.....................................        3,966         2,605        235
                                                         --------       -------     ------
                                                           31,804        23,401      1,682
                                                         --------       -------     ------
        Deferred tax expense:
          Federal...................................       (9,322)       (2,897)       (81)
          State.....................................       (1,147)         (437)      (174)
                                                         --------       -------     ------
                                                          (10,469)       (3,334)      (255)
                                                         --------       -------     ------
                  Total.............................    $  21,335       $20,067     $1,427
                                                         ========       =======     ======
</TABLE>
 
     The provision for income taxes differs from the amount computed by applying
the federal statutory income tax rate to income before taxes as follows (in
thousands):
 
<TABLE>
<CAPTION>
                                                             YEARS ENDED DECEMBER 31,
                                                          ------------------------------
                                                                         1995      1994
                                                             1996       -------   ------
                                                          -----------
                                                              (AS
                                                          RESTATED)
        <S>                                               <C>           <C>       <C>
        Tax computed at 35%.............................    $22,023     $19,404   $2,425
        State income taxes, net of federal effect.......      2,987       2,725      365
        Tax credits.....................................     (3,396)     (1,690)  (1,210)
        Other...........................................       (279)       (372)    (153)
                                                               ----        ----     ----
        Provision for income taxes......................    $21,335     $20,067   $1,427
                                                               ====        ====     ====
        Effective tax rate..............................         34%         36%      21%
                                                               ====        ====     ====
</TABLE>
 
     Significant components of the Company's deferred income tax asset are as
follows (in thousands):
 
<TABLE>
<CAPTION>
                                                                      DECEMBER 31,
                                                                  ---------------------
                                                                                  1995
                                                                      1996       ------
                                                                  ------------
                                                                      (AS
                                                                  RESTATED)
        <S>                                                       <C>            <C>
        Deferred tax asset:
        Reserves not currently deductible.......................    $  6,955     $1,177
        Deferred revenue........................................       4,828         --
        Compensation expense not currently deductible...........       3,823      2,032
        Other...................................................         266        600
                                                                        ----       ----
        Total deferred tax asset................................      15,872      3,809
        Deferred tax liabilities................................      (1,594)        --
                                                                        ----       ----
        Net deferred tax asset..................................    $ 14,278     $3,809
                                                                        ====       ====
</TABLE>
 
13. EMPLOYEE BENEFIT PLANS
 
     The Company implemented a nonqualified cash profit sharing plan in 1994
under which all employees are eligible to receive, on an annual basis, an equal
cash bonus based on pretax profits. The cash bonus under this plan was
$1,987,000, $1,175,000 and $303,000 in 1996, 1995 and 1994, respectively.
 
                                       46
<PAGE>   47
 
                                S3 INCORPORATED
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                  YEARS ENDED DECEMBER 31, 1996, 1995 AND 1994
 
     The Company has a 401(k) tax-deferred savings plan whereby all employees
meeting certain age and service requirements may contribute up to 20% of their
eligible compensation (up to a maximum allowed under IRS rules). Contributions
may be made by the Company at the discretion of the Board of Directors. No
contributions by the Company have been made to the plan since its inception.
 
14. EXPORT SALES AND SIGNIFICANT CUSTOMERS
 
     The Company's primary operations are located in the United States. The
Company sells its products into the personal computer market primarily in the
U.S., Asia and Europe. Export sales accounted for 58%, 44%, and 42% of net sales
in 1996, 1995, and 1994, respectively. Approximately 37%, 35%, and 28% of export
sales in 1996, 1995, and 1994, respectively, were to affiliates of United States
customers. In 1996, 16% and 45% of export sales were shipped to Hong Kong and
Taiwan respectively. Two customers accounted for 16% and 15% of net sales in
1996, two customers accounted for 17% and 12% of net sales in 1995 and two
customers accounted for 19% and 16% of net sales in 1994. At December 31, 1996,
two customers' accounts receivable represented 18% and 11% of accounts
receivable.
 
15. CONTINGENCIES
 
     The semiconductor and software industries are characterized by frequent
litigation regarding patent and other intellectual property rights. The Company
is party to various claims of this nature. Although the ultimate outcome of
these matters is not presently determinable, management believes that the
resolution of all such pending matters will not have a material adverse effect
on the Company's financial position or results of operations.
 
16. SUBSEQUENT EVENTS (UNAUDITED)
 
     Since November 1997, a number of complaints have been filed in federal and
state courts seeking an unspecified amount of damages on behalf of an alleged
class of persons who purchased shares of the Company's Common Stock at various
times between January 1, 1995 and November 3, 1997. The complaints name as
defendants the Company, certain of its officers and former officers and certain
directors of the Company, asserting that they violated federal and state
securities laws by misrepresenting and failing to disclose certain information
about the Company's business. In addition, certain shareholders have filed
derivative actions seeking recovery on behalf of the Company alleging, among
other things, breach of fiduciary duties by such individual defendants. The
Company has not formally responded to these complaints. While management intends
to defend the actions against the Company vigorously, there can be no assurance
that an adverse result or settlement with regards to such lawsuits would not
have a material adverse effect on the Company's financial condition or results
of operations.
 
     The Company has received from the United States Securities and Exchange
Commission a request for information relating to the Company's recent
restatement announcement. The Company has responded and intends to continue to
respond to such requests.
 
     The Company sold approximately 1/3 of its ownership interest in USC (United
Semiconductor Corporation), a joint venture between S3 and United
Microelectronics Corporation (UMC) and Alliance Semiconductor in January of
1998. The Company received approximately $68 million in cash and retains a 16%
interest in USC.
 
                                       47
<PAGE>   48
 
                                S3 INCORPORATED
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                  YEARS ENDED DECEMBER 31, 1996, 1995 AND 1994
 
SELECTED QUARTERLY CONSOLIDATED DATA (UNAUDITED)(1)
 
<TABLE>
<CAPTION>
                                                    FOURTH       THIRD       SECOND       FIRST
                                                   QUARTER      QUARTER      QUARTER     QUARTER
                                                   --------     --------     -------     --------
                                                      (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
<S>                                                <C>          <C>          <C>         <C>
YEAR ENDED DECEMBER 31, 1996 (AS RESTATED)
Net sales........................................  $127,916     $110,085     $99,122     $102,120
Gross margin.....................................    52,940       42,006      37,637       40,293
Income from operations...........................    21,792       13,251      10,993       14,658
Net income.......................................  $ 14,569     $  8,928     $ 7,712     $ 10,379
Earnings per share:
  Primary........................................  $   0.28     $   0.17     $  0.15     $   0.21
  Assuming full dilution(3)......................  $   0.27     $   0.17     $  0.15     $   0.21
Common and equivalent shares used in computing
  earnings per share:
  Primary........................................    52,455       51,101      50,114       50,047
  Assuming full dilution(3)......................    57,840       52,932      50,114       50,047
Stock prices:(2)
High.............................................  $  23.38     $  20.00     $ 15.75     $  17.63
Low..............................................  $  16.25     $  10.06     $ 10.88     $  11.88
YEAR ENDED DECEMBER 31, 1995
Net sales........................................  $103,536     $ 84,793     $70,558     $ 57,422
Gross margin.....................................    41,870       34,086      27,957       22,629
Income from operations...........................    16,509       14,009      11,367        9,067
Net income.......................................  $ 11,459     $  9,860     $ 7,970     $  6,085
Earnings per share:
  Primary........................................  $   0.23     $   0.20     $  0.17     $   0.15
Common and equivalent shares used in computing
  earnings per share:
  Primary........................................    50,329       50,496      46,074       41,152
Stock prices:(2)
High.............................................  $  19.94     $  21.63     $ 18.00     $  12.31
Low..............................................  $  13.06     $  17.00     $ 10.13     $   7.63
</TABLE>
 
---------------
 
(1) The following table presents selected unaudited consolidated financial
    results for each of the eight quarters in the two-year period ended December
    31, 1996. In the Company's opinion, this unaudited information has been
    prepared on the same basis as the audited information and includes all
    adjustments (consisting of only normal recurring adjustments) necessary for
    a fair statement of the financial information for the period presented.
 
(2) The Company's common stock trades on the Nasdaq National Market under the
    symbol SIII. The table indicates the range of the high and low closing
    prices, as reported by Nasdaq.
 
(3) Fully diluted earnings per share includes the effect of incremental shares
    issuable upon the conversion of the convertible subordinated notes and an
    adjustment to net income for the interest expense (net of income taxes)
    related to the notes.
 
     At December 31, 1996, there were approximately 476 stockholders of record
of the Company's common stock and approximately 31,452 beneficial stockholders.
The Company has never declared or paid cash
 
                                       48
<PAGE>   49
 
                                S3 INCORPORATED
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                  YEARS ENDED DECEMBER 31, 1996, 1995 AND 1994
 
dividends on its capital stock and does not anticipate paying any cash dividends
in the foreseeable future. The Company currently intends to retain future
earnings for the development of its business.
 
ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
FINANCIAL DISCLOSURE
 
     Not applicable.
 
                                    PART III
 
     Certain information required by Part III is incorporated by reference from
the Company's definitive Proxy Statement to be filed with the Securities and
Exchange Commission in connection with the solicitation of proxies for the
Company's 1997 Annual Meeting of Stockholders (the "Proxy Statement").
 
ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT
 
     The information required by this section is incorporated by reference from
the information in the section entitled "Election of Directors -- Nominees" in
the Proxy Statement. The required information concerning executive officers of
the Company is contained in the section entitled "Executive Officers of the
Registrant" in Part I of this Form 10-K.
 
     Item 405 of Regulation S-K calls for disclosure of any known late filing or
failure by an insider to file a report required by Section 16 of the Exchange
Act. This disclosure is contained in the section entitled "Section 16(a)
Beneficial Ownership Reporting Compliance" in the Proxy Statement and is
incorporated herein by reference.
 
ITEM 11. EXECUTIVE COMPENSATION
 
     The information required by this section is incorporated by reference from
the information in the sections entitled "Election of Directors -- Directors'
Compensation" and "Executive Compensation" in the Proxy Statement.
 
ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
 
     The information required by this section is incorporated by reference from
the information in the section entitled "Security Ownership of Certain
Beneficial Owners and Management" in the Proxy Statement.
 
ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
 
     Not applicable.
 
                                    PART IV
 
ITEM 14. EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K
 
(a) The following documents are filed as a part of this Form 10-K:
 
     (1) FINANCIAL STATEMENTS:
 
        Reference is made to the Index to Consolidated Financial Statements
        under Item 8 in Part II of this Form 10-K.
 
     (2) FINANCIAL STATEMENT SCHEDULES:
 
                                       49
<PAGE>   50
 
                                S3 INCORPORATED
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                  YEARS ENDED DECEMBER 31, 1996, 1995 AND 1994
 
     The following financial statement schedule of S3 Incorporated for the years
ended December 31, 1996, 1995 and 1994 is filed as part of this Report and
should be read in conjunction with the Consolidated Financial Statements of S3
Incorporated.
 
<TABLE>
<CAPTION>
                                                                         REFERENCE
                                                                           PAGE
                                                                         ---------
            <S>                                                          <C>
            Independent Auditors' Report on Financial Statement
              Schedule.................................................      30
            Schedule II -- Valuation and Qualifying Accounts...........      51
</TABLE>
 
     All other schedules are omitted because they are not applicable or the
required information is shown in the financial statements or notes thereto.
 
     (3) EXHIBITS:
 
     The exhibits listed below are required by Item 601 of Regulation S-K. Each
management contract or compensatory plan or arrangement required to be filed as
an exhibit to this Form 10-K has been identified.
 
<TABLE>
<CAPTION>
  EXHIBIT
  NUMBER    NOTES                              DESCRIPTION OF DOCUMENT
  -------   -----    ---------------------------------------------------------------------------
  <S>       <C>      <C>
   3(i).1     (1)    Restated Certificate of Incorporation.
   3(i).2     (6)    Certificate of Amendment of Restated Certificate of Incorporation.
   3(ii)      (1)    Bylaws.
   4.1        (1)    Specimen Common Stock Certificate
   4.2        (8)    Indenture, dated as of September 12, 1996 between Registrant and State
                     Street Bank and Trust Company of California, N.A., as Trustee, including
                     the form of Note.
   4.3        (9)    Registration Rights Agreement, dated September 12, 1996, among Registrant,
                     Lehman Brothers Inc., PaineWebber Incorporated and Cowen & Company.
  10.1*      (10)    1989 Stock Plan of S3 Incorporated, as amended (the "1989 Plan").
  10.2*       (1)    Form of Incentive Stock Option Agreement under the 1989 Plan.
  10.3*       (1)    Form of Nonstatutory Stock Option Agreement under the 1989 Plan.
  10.4*       (1)    Form of Common Stock Purchase Agreement under the 1989 Plan.
  10.5*       (2)    S3 Incorporated 1993 Employee Stock Purchase Plan.
  10.6        (1)    Form of Indemnification Agreement between the Registrant and its directors.
  10.7        (3)    Office Lease dated May 13, 1993, between the Registrant and San Tomas No. 2
                     Limited Partnership.
  10.8        (3)    First Amendment of Office Lease dated September 9, 1993, between the
                     Registrant and San Tomas No. 2 Limited Partnership.
  10.9        (4)    Office Lease dated March 30, 1994, between the Registrant and San Tomas No.
                     1 Limited Partnership.
  10.10       (4)    Second Amendment of Office Lease dated March 30, 1994, between the
                     Registrant and San Tomas No. 2 Limited Partnership.
  10.11       (5)    Foundry Venture Agreement among Registrant, Alliance Semiconductor
                     Corporation and United Microelectronics Corporation dated as of July 8,
                     1995
  10.12       (7)    Lease between Mission Real Estate, L.P. and Registrant dated November 29,
                     1995.
  21.1        (6)    Subsidiaries of S3 Incorporated.
  23.1               Independent Auditors' Consent.
  24.1               Power of Attorney (see page 51 of this Form 10-K)
  27.1               Financial Data Schedules
</TABLE>
 
---------------
 
 *  Indicates management contract or compensatory plan or arrangement.
 
 (1) Incorporated by reference from the Registrant's Registration Statement on
     Form S-1 (File No. 33-57114).
 
                                       50
<PAGE>   51
 
                                S3 INCORPORATED
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                  YEARS ENDED DECEMBER 31, 1996, 1995 AND 1994
 
 (2) Incorporated by reference to Exhibit 10.15 to the Registrant's Registration
     Statement on Form S-8 (File No. 33-65186).
 
 (3) Incorporated by reference to the exhibit of the same number to the
     Registrant's Annual Report on Form 10-K for the year ended December 31,
     1993.
 
 (4) Incorporated by reference to the exhibit of the same number to the
     Registrant's Annual Report on Form 10-K for the year ended December 31,
     1994.
 
 (5) Incorporated by reference to the exhibit of the same number to the
     Registrant's Current Report on Form 8-K filed July 25, 1995.
 
 (6) Incorporated by reference to the exhibit of the same number to the
     Registrant's Annual Report on Form 10-K for the year ended December 31,
     1995.
 
 (7) Incorporated by reference to Exhibit 10.14 to the Registrant's Annual
     Report on form 10-K for the year ended December 31, 1995.
 
 (8) Incorporated by reference to Exhibit 4.1 to Registrant's Quarterly Report
     on Form 10-Q for the quarter ended September 30, 1996.
 
 (9) Incorporated by reference to Exhibit 4.2 to Registrant's Quarterly Report
     on Form 10-Q for the quarter ended September 30, 1996.
 
(10) Incorporated by reference to the exhibit of the same number to the
     Registrant's Annual Report on Form 10-K for the year ended December 31,
     1996, as originally filed on March 31, 1997.
 
(b) REPORTS ON FORM 8-K:
 
     There were no Reports on Form 8-K filed by the Company during the quarter
ended December 31, 1996.
 
                                       51
<PAGE>   52
 
                                  SCHEDULE II
 
                       VALUATION AND QUALIFYING ACCOUNTS
 
                  YEARS ENDED DECEMBER 31, 1996, 1995 AND 1994
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                       REVERSALS
                                             BALANCE AT   CHARGED TO   TO COSTS                    BALANCE AT
                                             BEGINNING    COSTS AND       AND                        END OF
                DESCRIPTION                  OF PERIOD     EXPENSES    EXPENSES    DEDUCTIONS(1)     PERIOD
-------------------------------------------  ----------   ----------   ---------   -------------   ----------
<S>                                          <C>          <C>          <C>         <C>             <C>
Allowance for doubtful accounts:
  1996.....................................     $645        $1,522       $  --         $(729)        $1,438
  1995.....................................      375         1,014          --          (744)           645
  1994.....................................      114           725          --          (464)           375
Sales returns and allowances:
  1996.....................................     $969        $  241       $  --         $  --         $1,210
  1995.....................................      455           514          --            --            969
  1994.....................................      303           152          --            --            455
</TABLE>
 
---------------
 
(1) Deductions from these reserves are for the purpose for which these reserves
were created.
 
                                       52
<PAGE>   53
 
                                   SIGNATURES
 
     Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the Registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized, on February 25, 1998.
 
                                          S3 INCORPORATED
                                          (Registrant)
 
                                          By:      /s/ TERRY N. HOLDT
                                            ------------------------------------
                                                       Terry N. Holdt
                                               President and Chief Executive
                                                           Officer
                                                   Chairman of the Board
                                                     February 25, 1998
 
     Pursuant to the requirements of the Securities Exchange Act of 1934, this
report has been signed below by the following persons on behalf of the
Registrant and in the capacities and on the date indicated:
 
<TABLE>
<S>                                               <C>
             /s/ TERRY N. HOLDT                                /s/ ROBERT P. LEE*
---------------------------------------------     ---------------------------------------------
               Terry N. Holdt                                     Robert P. Lee
     President, Chief Executive Officer                             Director
            Chairman of the Board                               February 25, 1998
              February 25, 1998
 
            /s/ WALTER D. AMARAL                              /s/ JOHN C. COLLIGAN*
---------------------------------------------     ---------------------------------------------
              Walter D. Amaral                                  John C. Colligan
   Senior Vice President & Chief Financial                          Director
                   Officer                                      February 25, 1998
(Principal Financial and Accounting Officer)
              February 25, 1998
 
            /s/ GARY J. JOHNSON*                             /s/ CARMELO J. SANTORO*
---------------------------------------------     ---------------------------------------------
               Gary J. Johnson                                 Carmelo J. Santoro
         Vice Chairman of the Board                                 Director
              February 25, 1998                                 February 25, 1998
 
             /s/ RONALD T. YARA*                            /s/ DIOSDADO P. BANATAO*
---------------------------------------------     ---------------------------------------------
               Ronald T. Yara                                  Diosdado P. Banatao
                  Director                                          Director
              February 25, 1998                                 February 25, 1998
 
           *BY: /s/ TERRY N. HOLDT
---------------------------------------------
               Terry N. Holdt
     President, Chief Executive Officer
            Chairman of the Board
              February 25, 1998
</TABLE>
 
                                       52