Document:

<PAGE>
                                                                    EXHIBIT 10.1

                               AMENDMENT NO. 3 dated as of September 18, 2002
                               (this "Amendment"), to the CREDIT AGREEMENT dated
                               as of June 6, 2000, and as amended by Amendment
                               No. 1 dated as of May 29, 2001, and Amendment No.
                               2 dated as of August 3, 2001 (the "Credit
                               Agreement"), among FAIRCHILD SEMICONDUCTOR
                               CORPORATION, a Delaware corporation (the
                               "Borrower"), FAIRCHILD SEMICONDUCTOR
                               INTERNATIONAL, INC., a Delaware corporation
                               ("Holdings"), the Lenders (as defined in Article
                               I of the Credit Agreement), CREDIT SUISSE FIRST
                               BOSTON, a bank organized under the laws of
                               Switzerland, acting through its New York branch,
                               as swingline lender (in such capacity, the
                               "Swingline Lender"), as an Issuing Bank (as
                               defined in Article I of the Credit Agreement), as
                               administrative agent (in such capacity, the
                               "Administrative Agent") and as collateral agent
                               (in such capacity, the "Collateral Agent") for
                               the Lenders, FLEET NATIONAL BANK, as an Issuing
                               Bank and as syndication agent (in such capacity,
                               the "Syndication Agent"), and ABN AMRO BANK NV,
                               as documentation agent (in such capacity, the
                               "Documentation Agent").

      A. Pursuant to the Credit Agreement, the Lenders and the Issuing Banks
have extended, and have agreed to extend, credit to the Borrower, in each case
pursuant to the terms and subject to the conditions set forth in the Credit
Agreement.

      B. Holdings and the Borrower have requested that certain provisions of the
Credit Agreement be amended as provided herein. The Required Lenders, on the
terms and subject to the conditions set forth herein, are willing so to amend
the Credit Agreement.

     C. Capitalized terms used but not defined herein shall have the meanings
assigned to them in the Credit Agreement, as amended hereby.

      Accordingly, in consideration of the mutual agreements herein contained
and other good and valuable consideration, the sufficiency and receipt of which
are hereby acknowledged, the parties hereto agree as follows:

      SECTION 1. Amendments to the Credit Agreement. (a) The definition of the
term "Cash Equivalents" set forth in Section 1.01 of the Credit Agreement is
hereby amended by deleting the words "and (f)" set forth therein and
substituting therefor the following:

            ", (f) senior corporate debt obligations of a U.S. issuer that are
      rated BBB or better by Standard & Poor's Ratings Service or Baa2 or better
      by Moody's Investors Service, Inc., that mature not more than three years
      after the date of acquisition by such person and that are actively traded
      in a secondary market, and (g)".
<PAGE>
      (b) Section 6.04(a) of the Credit Agreement is hereby amended by inserting
after the words "Cash Equivalents" set forth therein the following:

            ", provided that, in the case of Cash Equivalents, (i) the weighted
      average life to maturity of all Cash Equivalents held by the Borrower and
      its Subsidiaries at any time shall not exceed one year and (ii)
      obligations described in clause (f) of the definition of such term that
      are rated BBB by Standard & Poor's Rating Service or Baa2 by Moody's
      Investors Service, Inc. shall not comprise more than 10% of all Cash
      Equivalents held by the Borrower and its Subsidiaries at any time".

      SECTION 2. Representations and Warranties. To induce the other parties
hereto to enter into this Amendment, each of Holdings and the Borrower
represents and warrants to the Administrative Agent, the Collateral Agent, the
Issuing Banks and each of the Lenders that:

            (a) This Amendment has been duly authorized, executed and delivered
      by it and constitutes its legal, valid and binding obligation, enforceable
      in accordance with its terms except as such enforceability may be limited
      by bankruptcy, insolvency, reorganization, moratorium or other similar
      laws affecting creditors' rights generally and by general principles of
      equity (regardless of whether such enforceability is considered in a
      proceeding at law or in equity).

            (b) After giving effect to this Amendment, the representations and
      warranties set forth in Article III of the Credit Agreement are true and
      correct in all material respects on and as of the date hereof with the
      same effect as though made on and as of the date hereof, except to the
      extent such representations and warranties expressly relate to an earlier
      date.

            (c) After giving effect to this Amendment, no Default or Event of
Default has occurred and is continuing.

      SECTION 3. Effectiveness. This Amendment shall become effective as of the
date first above written on the date that the Administrative Agent shall have
received counterparts of this Amendment that, when taken together, bear the
signatures of Holdings, the Borrower, the Subsidiary Guarantors and the Required
Lenders.

      SECTION 4. Effect of Amendment. Except as expressly set forth herein, this
Amendment shall not by implication or otherwise limit, impair, constitute a
waiver of, or otherwise affect the rights and remedies of the Lenders, the
Administrative Agent, Holdings or the Borrower under the Credit Agreement or any
other Loan Document, and shall not alter, modify, amend or in any way affect any
of the terms, conditions, obligations, covenants or agreements contained in the
Credit Agreement or any other Loan Document, all of which are ratified and
affirmed in all respects and shall continue in full force and effect. Nothing
herein shall be deemed to entitle the Borrower or Holdings to a consent to, or a
waiver, amendment, modification or other change of, any of the terms,
conditions, obligations, covenants or agreements contained in the Credit
Agreement or any other Loan Document in similar or different circumstances.
After the date hereof, any reference to the Credit Agreement shall mean the
Credit Agreement as modified hereby. This Amendment shall constitute a "Loan
Document" for all purposes of the Credit Agreement and the other Loan Documents.
<PAGE>
     SECTION 5. APPLICABLE LAW. THIS AMENDMENT SHALL BE GOVERNED BY, AND
CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

      SECTION 6. Counterparts. This Amendment may be executed in counterparts
(and by different parties hereto on different counterparts), each of which shall
constitute an original but all of which when taken together shall constitute a
single contract. Delivery of an executed signature page to this Amendment by
facsimile transmission shall be effective as delivery of a manually signed
counterpart of this Amendment.

      SECTION 7. Expenses. The Borrower agrees to reimburse the Administrative
Agent for its out-of-pocket expenses in connection with this Amendment,
including the reasonable fees, charges and disbursements of Cravath, Swaine &
Moore, counsel for the Administrative Agent.

     SECTION 8. Notices. All notices hereunder or in connection herewith shall
be given in accordance with the provisions of Section 9.01 of the Credit
Agreement.

     SECTION 9. Headings. The headings of this Amendment are for purposes of
reference only and shall not limit or otherwise affect the meaning hereof.

     SECTION 10. Acknowledgment of Guarantors. Each of the Guarantors hereby
acknowledges receipt and notice of, and consents to the terms of, this
Amendment.4
<PAGE>
      IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
duly executed by their respective authorized officers as of the day and year
first above written.

                              FAIRCHILD SEMICONDUCTOR CORPORATION

                              by /s/ Matthew W. Towse
                                 ---------------------------------------
                                 Name: Matthew W. Towse
                                 Title: Vice President, Treasurer

                              FAIRCHILD SEMICONDUCTOR
                              INTERNATIONAL, INC.

                              by /s/ Matthew W. Towse
                                 ---------------------------------------
                                 Name: Matthew W. Towse
                                 Title: Vice President, Treasurer

                              EACH OF THE SUBSIDIARY GUARANTORS
                              LISTED ON ANNEX I HERETO,

                              by /s/ Matthew W. Towse
                                 -------------------------------------
                                 Name: Matthew W. Towse
                                 Title: Vice President, Treasurer

                              CREDIT SUISSE FIRST BOSTON, individually and as
                              Administrative Agent, Collateral Agent, Swingline
                              Lender and an Issuing Bank,

                              by /s/ Robert Hetu
                                 --------------------------------------
                                 Name: Robert Hetu
                                 Title: Director

                              by /s/ Ian W. Nalitt
                                 --------------------------------------
                                 Name: Ian W. Nalitt
                                 Title: Associate

                              FLEET NATIONAL BANK, individually and as
                              Syndication Agent and an Issuing Bank,

                              by /s/ William B. Williamson
                                 --------------------------------------
                                 Name: William B. Williamson
                                 Title: Senior Vice President

<PAGE>
                              ABN AMRO BANK NV, individually and as
                              Documentation Agent,

                              by /s/ Richard Da Costa
                                 ---------------------------------------
                                 Name: Richard Da Costa
                                 Title: Group Vice President

                              by /s/ Jana Dombrowski
                                 ---------------------------------------
                                 Name: Jana Dombrowski
                                 Title: Vice President
<PAGE>
                                          SIGNATURE PAGE TO AMENDMENT NO. 3
                                          DATED AS OF
                                          SEPTEMBER 18, 2002 TO THE FAIRCHILD
                                          SEMICONDUCTOR
                                          CORPORATION CREDIT AGREEMENT DATED
                                          AS OF
                                          JUNE 6, 2000, AS AMENDED.

NAME OF LENDER: General Electric Corporation

                by /s/ Gregory Hong
                   ---------------------------------------
                   Name: Gregory Hong
                   Title: Duly Authorized Signatory
<PAGE>
                                          SIGNATURE PAGE TO AMENDMENT NO. 3
                                          DATED AS OF
                                          SEPTEMBER 18, 2002 TO THE FAIRCHILD
                                          SEMICONDUCTOR
                                          CORPORATION CREDIT AGREEMENT DATED
                                          AS OF
                                          JUNE 6, 2000, AS AMENDED.

NAME OF LENDER: LLOYDS TSB BANK

                by /s/ Matthew A.L. Packham
                   ----------------------------------------------
                   Name: Matthew A.L. Packham
                   Title: Assistant Director, Acquisition Finance

                by /s/ Nicholas J. Bruce
                   ----------------------------------------------
                   Name: Nicholas J. Bruce
                   Title: Credit Services
<PAGE>
                                          SIGNATURE PAGE TO AMENDMENT NO. 3
                                          DATED AS OF
                                          SEPTEMBER 18, 2002 TO THE FAIRCHILD
                                          SEMICONDUCTOR
                                          CORPORATION CREDIT AGREEMENT DATED
                                          AS OF
                                          JUNE 6, 2000, AS AMENDED.

NAME OF LENDER: CITIZENS BANK OF MASSACHUSETTS

                by /s/ William F. Granchelli
                   -----------------------------------
                   Name: William F. Granchelli
                   Title: Senior Vice President
<PAGE>
                                          SIGNATURE PAGE TO AMENDMENT NO. 3
                                          DATED AS OF
                                          SEPTEMBER 18, 2002 TO THE FAIRCHILD
                                          SEMICONDUCTOR
                                          CORPORATION CREDIT AGREEMENT DATED
                                          AS OF
                                          JUNE 6, 2000, AS AMENDED.

NAME OF LENDER: BANK OF SCOTLAND

                by /s/ Joseph Fratus
                   --------------------------------
                   Name: Joseph Fratus
                   Title: First Vice President
<PAGE>
                                                                         ANNEX 1

                              SUBSIDIARY GUARANTORS

Fairchild Semiconductor Corporation of California
82 Running Hill Road
South Portland, ME 04106

Kota Microcircuits, Inc.
82 Running Hill Road
South Portland, ME 04106

QT Optoelectronics, Inc.
82 Running Hill Road
South Portland, ME 04106

QT Optoelectronics
82 Running Hill Road
South Portland, ME 04106<PAGE>
                                                                    EXHIBIT 10.1

                               SUBLEASE AGREEMENT

        THIS SUBLEASE AGREEMENT (the "Sublease"), dated as of September 19,
2002 is made between the Sublandlord and Subtenant listed in Article I below.

ARTICLE I:        DEFINED TERMS; BACKGROUND

1.      Each reference in this Sublease to the capitalized terms set forth
        below shall have the meanings given to them in this Article I.
<TABLE>
<CAPTION>

<S>                                                    <C>
         Sublandlord:                                  RSA Security, Inc., a Delaware corporation

         Sublandlord's Address                         174 Middlesex Turnpike
         for Payment of Rent:                          Bedford, MA 01730

         Sublandlord's Notice Address:                 174 Middlesex Turnpike
                                                       Bedford, MA  01730
                                                       Attention: Michael Hare, Director of Real Estate

                                                       With a copy to:

                                                       Robert Tuchmann, Esq.
                                                       Hale and Dorr LLP
                                                       60 State Street
                                                       Boston, MA  02109

         Subtenant:                                    NVIDIA Corporation, a Delaware corporation

         Subtenant's Notice Address:                   Nvidia Corporation
                                                       Attn: Stephen Pettigrew
                                                       Legal Department
                                                       2701 San Tomas Expressway
                                                       Santa Clara, CA 95050

         Master Lease:                                 Lease dated March 11, 1996 between EOP-Crosby Corporate
                                                       Center, L.L.C., as successor in interest to Beacon
                                                       Properties, L.P., and RSA Security, Inc., as successor to
                                                       Security Dynamics Technologies, Inc., as amended by the First
                                                       Amendment to Lease dated May 10, 1997, the Second Amendment
                                                       to Lease dated April 8, 1998, and the Third Amendment to
                                                       Lease dated May 9, 2000, copies of which are attached hereto
                                                       as EXHIBIT A. (The First and Second Amendments merely added
                                                       space to the Master Leased Premises which are not included in
                                                       the Subleased Premises.)
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
<S>                                                    <C>
         Master Landlord:                              EOP-Crosby Corporate Center, L.L.C., a Delaware limited
                                                       liability company

         Master Leased Premises:                       The entirety of 20 Crosby Drive (Building One), the entirety
                                                       of 24 Crosby Drive (Building Three), the entirety of 36
                                                       Crosby Drive (Building Nine) and 19,859 rentable square feet
                                                       ("RSF") on the second floor of the building located at 34
                                                       Crosby Drive (Building Eight), all located in Bedford,
                                                       Massachusetts.

         Subleased Premises:                           The portion of the Master Leased Premises consisting of a
                                                       portion of the space (approximately 11,863 RSF) on the
                                                       second floor of the building located at 34 Crosby Drive
                                                       (Building Eight) and shown on the plan attached hereto as
                                                       EXHIBIT B demised to Sublandlord by the Master Lease.

         Sublease Commencement Date:                   From the Commencement Date through June 30, 2005 the
                                                       Commencement Date shall be the later of; (i) full execution
                                                       of the sublease by both parties, (ii) receipt by Tenant of
                                                       Landlord's Consent to Sublease or (iii) Sublandlord's
                                                       completion of construction. Both Sublandlord and Tenant's
                                                       architect shall mutually agree when Sublandlord's
                                                       construction is substantially complete. Tenant and its
                                                       agents shall have access to the Premises prior to
                                                       Commencement Date for purposes of measuring designing, and
                                                       constructing the space so long as Tenant does not interfere
                                                       with Sublandlord's work. Early access shall be at no charge
                                                       to Tenant, and shall not trigger commencement of the lease.
                                                       If Sublandlord does not deliver Master Landlord's consent to
                                                       the Sublease within twenty one (21) days following execution
                                                       of the Sublease by Subtenant, then Subtenant shall have the
                                                       right to terminate the Sublease.

         Sublease Term:                                Commencing on the Sublease Commencement Date and ending on
                                                       June 30, 2005.

         Rent Commencement Date:                       Two (2) months following the Sublease Commencement Date.

         Yearly Rent:                                  Sixteen and 00/100 Dollars ($16.00) per RSF per
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
<S>                                                    <C>
                                                       annum, payable in equal monthly installments, for the Sublease
                                                       Term.

         Base Year for Expenses and Taxes:             Calendar year 2002 for operating expenses and fiscal tax year
                                                       2003 for real estate taxes.

         Subtenant's Expenses Percentage:              15.5795% (of 34 Crosby Drive)

         Subtenant's Tax Percentage:                   4.6065 % (of the entire Park, as defined in the Master Lease)

         Permitted Uses:                               General office purposes, research, development, light
                                                       manufacturing and any uses ancillary thereto.
         Excluded Sections of the Master Lease:        Article 4, Sections 17.4(d), 17.4(e), 21.4(b), the last
                                                       sentence of Section 26(a), Section 29.3, Exhibits 4, 4-A,
                                                       and 12 of the Master Lease, all of First Amendment, all
                                                       of Second Amendment, and Paragraphs 1, 2, 4, 5, 9, 11 and
                                                       12 of Third Amendment

         Parking Spaces Available to Subtenant:        Subtenant shall have the non-exclusive use of forty one (41)
                                                       parking spaces.

         Broker:                                       CRESA Partners. Sublandlord will be responsible for broker
                                                       commissions pertaining to this Sublease pursuant to a
                                                       separate agreement.
</TABLE>

2.      Sublandlord is the tenant under the Master Lease. Sublandlord and
        Subtenant wish to enter into a sublease of the Subleased
        Premises on the terms and conditions set forth herein.

ARTICLE II:       AGREEMENTS

NOW, THEREFORE, the parties agree as follows:

1.      SUBLEASED PREMISES

        Sublandlord hereby subleases to Subtenant, on the terms and conditions
        set forth in this Sublease, the Subleased Premises. Sublandlord shall
        deliver the Subleased Premises to Subtenant on the Sublease
        Commencement Date with all building systems serving the Premises in
        good working condition, broom clean, but otherwise in such "AS IS,
        WHERE IS" condition as exists as of the date of this Sublease, free of
        all occupants other than Subtenant. Subtenant acknowledges that
        Sublandlord has made no representations or warranties concerning the
        Subleased Premises or the Building or their fitness for Subtenant's
        purposes, except as expressly set forth in this Sublease. Sublandlord
        has received no notice that any of the common areas or Sublandlord's
        equipment is in violation of any

<PAGE>

         building code or government agency regulation. The taking of possession
         of the Subleased Premises shall be deemed Subtenant's acknowledgement
         that the same have been delivered in the condition required hereunder.
         All space shall be in accordance with BOMA standard measurements.

2.       SUBLEASE TERM

         The term of this Sublease shall commence on the Sublease Commencement
         Date and continue for the Sublease Term unless terminated prior to such
         date pursuant to the terms hereof or pursuant to law. Promptly
         following the actual Sublease Commencement Date and upon request of
         Sublandlord, Sublandlord and Subtenant shall jointly execute a written
         declaration specifying the actual Sublease Commencement Date. Subtenant
         will have access upon execution of this Sublease to the Subleased
         Premises for measuring and design purposes only.

3.       RENT

         Subtenant shall pay to Sublandlord the Yearly Rent in twelve (12) equal
         monthly installments (pro rated in the case of any partial calendar
         month at the beginning or end of the Sublease Term, based upon the
         actual number of days in the month), without deduction, offset, notice,
         or demand, commencing on the Rent Commencement Date, at Sublandlord's
         Address for Payment of Rent, or at such other place as Sublandlord
         shall designate from time to time by notice to Subtenant. Yearly Rent,
         in equal monthly installments, shall be paid for on the first day of
         each calendar month occurring during the Sublease Term to which such
         Yearly Rent is attributable. The Rent for the first full calendar month
         of the Sublease Term shall be payable on the Sublease Commencement
         Date.

         All charges, costs, expenses and sums required to be paid or borne by
         Subtenant under this Sublease in addition to Yearly Rent shall be
         deemed "Additional Rent," and Yearly Rent and Additional Rent shall
         hereinafter collectively be referred to as "Rent." Subtenant's covenant
         to pay Rent shall be independent of every other covenant in this
         Sublease.

4.       EXPENSES AND TAXES; ELECTRICITY CHARGES

                  (a)  In addition to Yearly Rent, Subtenant shall pay to
                  Sublandlord the Tax Excess and Operating Expense Excess (as
                  those terms are defined in the Master Lease), and all other
                  additional rent and other charges, however described, payable
                  under the Master Lease by Sublandlord, as tenant under the
                  Master Lease, with respect to the Subleased Premises or
                  Subtenant's use and occupancy thereof. Subtenant shall pay
                  such amount within twenty-five (25) days of receipt of an
                  invoice therefore from Sublandlord. Sublandlord shall provide
                  Subtenant with copies of Master Landlord's statement regarding
                  Operating Expenses and Taxes and any other charges. With
                  respect to any portion of the Sublease Term not ending on the
                  last day of a calendar year or fiscal year, the amount of the
                  Operating

<PAGE>

                  Expenses and/or the Taxes payable to Subtenant shall be pro
                  rated based on a three hundred sixty five (365) day year.

                  (b) Subtenant shall pay $0.95 per RSF per year for electricity
                  in the office portion of the Subleased Premises containing
                  approximately 10,024 RSF. Subtenant shall also pay to
                  Sublandlord all costs of electricity consumed in the
                  laboratory portion of the Subleased Premises containing
                  approximately 1,780 RSF, as measured by a separate check meter
                  to be installed by Sublandlord.

5.       INSURANCE/WAIVER OF CLAIMS AND SUBROGATION

                  (a)   During the Sublease Term, Subtenant shall maintain
                  insurance of such types, in such policies, with such
                  endorsements and coverages, in such amounts as are set forth
                  in the Master Lease. All insurance policies shall name Master
                  Landlord, Master Landlord's managing agent, Sublandlord and
                  Sublandlord's managing agent as additional insureds and loss
                  payees and shall contain an endorsement that such policies may
                  not be modified or canceled without thirty (30) days prior
                  written notice to Master Landlord and Sublandlord. Subtenant
                  shall promptly pay all insurance premiums and shall provide
                  Sublandlord with policies or certificates thereof that are
                  acceptable to Sublandlord and Master Landlord evidencing such
                  insurance upon Subtenant's execution of this Sublease.

                  (b)   In the event Subtenant sustains a loss by reason of fire
                  or other casualty that is covered by its property insurance
                  policy (or would have been covered had Subtenant carried the
                  insurance required hereunder), and regardless of whether such
                  fire or other casualty is caused in whole or in part by the
                  acts or omissions of Sublandlord or Master Landlord or their
                  agents, servants, employees or invitees, then Subtenant agrees
                  to look first to the coverage provided by its insurance
                  proceeds, and Subtenant shall have no right of action against
                  Sublandlord, Master Landlord, or their agents, servants,
                  employees or invitees, and no third party shall have any right
                  by way of assignment, subrogation or otherwise against the
                  party causing such loss; provided, however, in the event of
                  such claims against Sublandlord, the foregoing release of
                  claims shall only apply to the extent of insurance proceeds
                  actually collected by such party (unless such party failed to
                  maintain the coverage required hereunder, in which event it
                  shall be deemed to have recovered the entire policy amount
                  required hereunder). In the event Sublandlord sustains a loss
                  by reason of fire or other casualty that is covered by its
                  property insurance policy, and regardless of whether such fire
                  or other casualty is caused in whole or in party by the acts
                  or omissions of Subtenant or its agents, servants, employees
                  or invitees, then Sublandlord agrees to look first to the
                  coverage provided by its insurance proceeds, and it shall have
                  no right of actions against Subtenant or its agents, servants,
                  employees or invitees, and no third party shall have any right
                  by way of assignment, subrogation

<PAGE>

                  or otherwise against Subtenant; provided, however, the
                  foregoing release of claims shall only apply to the extent of
                  insurance proceeds actually collected by Sublandlord. The
                  parties hereto agree that each of their policies of property
                  insurance shall include a waiver of subrogation to effectuate
                  this provision.

6.       USE OF PREMISES

         Subtenant shall use and occupy the Subleased Premises only for the
         Permitted Uses, and only to the extent permitted by the Master Lease
         and all laws governing or affecting Subtenant's use of the Subleased
         Premises. Subject to the preceding sentence, Subtenant may use the
         Subleased Premises for general office purposes and/or sales, service,
         demonstration, development, storage and training of their networking
         and/or related products.

7.       PROVISION OF SERVICES; ADDITIONAL SERVICES

         Those services provided by Master Landlord to Sublandlord under the
         Master Lease shall also be provided by Master Landlord to Subtenant,
         except those services explicitly excluded by the terms of this
         Sublease. No additional services are currently included in Yearly Rent
         or Operating Expenses. Subtenant may request Sublandlord to furnish the
         Subleased Premises or Subtenant with services not included in the
         Master Lease or services explicitly excluded by the terms of this
         Sublease ("Additional Services"). If Sublandlord furnishes Subtenant
         with any Additional Services, Sublandlord may charge Subtenant a
         reasonable charge (if any are incurred) ("Additional Charge") related
         solely to the provision of Additional Services. If Sublandlord
         estimates that the Additional Charge may be in excess of One-Thousand
         Dollars ($1000), Sublandlord shall provide Subtenant a written and
         documented estimation of the Additional Costs before commencing or
         providing such Additional Services, and thereafter Subtenant shall have
         five (5) days with which to indicate whether Subtenant desires to
         receive such Additional Services. Upon completion or provision of
         Additional Services by Sublandlord, and receipt of the written notice
         of the Additional Charge from Sublandlord, Subtenant shall pay
         Sublandlord the Additional Charge within ten (10) days of the receipt
         of the written notice of the Additional Charge.

8.       CONDITION OF PREMISES; TRADE FIXTURES

         Subtenant shall have the right to furnish and install any trade
         fixtures that are necessary for the conduct of its business; provided,
         however, that at the termination of this Sublease, Subtenant shall
         remove such trade fixtures and restore the Subleased Premises at
         Subtenant's sole cost to the state and condition in which they existed
         on the Commencement Date, ordinary wear and tear excepted. If Subtenant
         fails to comply with the provisions of this paragraph, Sublandlord may
         make such repairs or restoration, and the reasonable cost thereof shall
         be additional rent payable by Subtenant on demand. All trade fixtures
         shall be and remain the property of Subtenant, provided that any such
         trade fixtures

<PAGE>

         remaining on the Premises after the expiration or termination of
         the term hereof shall be deemed abandoned by Subtenant and shall, at
         Sublandlord's option, become the property of Sublandlord without
         payment therefor.

9.       ALTERATIONS AND IMPROVEMENTS

         Prior to the Sublease Commencement Date and at Sublandlord's sole
         expense, Sublandlord shall demise the Subleased Premises from the
         Master Leased Premises. This shall include relocating thermostats to
         control the HVAC and Electrical in the Subleased Premises, installing
         tile hung drop ceilings to match the existing conditions, install all
         necessary lights, electrical outlets, sprinklers and emergency
         lighting. The demising walls shall be built to the deck, finished and
         painted on both sides below the ceiling. Demised space to be secure to
         the deck from all outside common and tenant areas. Additionally,
         Sublandlord shall construct a common vestibule outside of the lab area
         in front of the two electrical closets (collectively, "Sublandlord's
         Work"). Sublandlord's Work shall be done in compliance with all
         governmental regulations including, but not limited to, the 1992
         Americans with Disabilities Act, any other law requiring handicapped
         accessibility, and any environmental standard including air quality
         requirements. Should an additional subtenant take occupancy of the
         balance of Master Leased Premises, Sublandlord will, at that time,
         relocate power circuits serving the additional subleased space from the
         Base Building Electrical Room to the electrical closet in the common
         area adjacent to the south side of the lab area. However, the circuits
         serving any additional subtenant shall be located on a panel separate
         from those circuits serving the lab area in the Subleased Premises.
         Circuits for Base Building HVAC and Lighting for both subtenants will
         remain fed from the Base Building Electrical Room. Sublandlord shall
         segregate all circuits serving the lab area in the Subleased Premises
         into one electrical panel to which Subtenant shall have exclusive
         access. Subtenant may install, at Subtenant's sole cost and expense, a
         security lock system for the lab circuit panel provided that
         Sublandlord and Prime Landlord are able to access said circuit panel.

         Except for the Sublandlord's Work, Sublandlord shall have no obligation
         to make any alterations or improvements to the Premises for Subtenant's
         use or occupancy thereof. Notwithstanding any provisions of the Master
         Lease to the contrary, Subtenant shall not make any alterations,
         additions, improvements or installments in the Subleased Premises
         without in each instance obtaining the prior written consent of both
         Master Landlord and Sublandlord, which they may grant, withhold or
         condition in their respective sole and absolute discretion. If
         Sublandlord and Master Landlord consent to any such alterations,
         improvements or installations, Subtenant shall perform and complete
         such alterations, improvements and installations at its expense, in
         compliance with applicable laws and the Master Lease. If Subtenant
         performs any alterations, improvements or installations without
         obtaining the prior written consent of both Master Landlord and
         Sublandlord, Sublandlord (or Master Landlord) may remove such
         alterations, improvements or installations, restore the Subleased
         Premises and repair any

<PAGE>

         damage arising from such removal or restoration, and Subtenant
         shall be liable for all costs and expenses incurred in the performance
         of such removal, repairs or restoration. All alterations, additions
         and improvements (except trade fixtures) shall be and remain the
         property of Sublandlord upon installation and shall be surrendered to
         Sublandlord upon the termination of this Sublease.

10.      ASSIGNMENT AND SUBLETTING

         Subject to the provisions of Article 16 of the Master Lease, Subtenant
         shall have the right to subsublet or assign all or any part of the
         Subleased Premises, subject to the prior written approval of both the
         Sublandlord and the Master Landlord, such approval shall not be
         unreasonably withheld and which will be approved or denied within ten
         (10) days of Subtenant's request to sublet or assign. After deducting
         all Subtenant's costs associated with the sublease, Sublandlord and
         Subtenant will equally split all sublease profits due to Subtenant
         under the subsublease.

11.      SUBORDINATION TO MASTER LEASE

         This Sublease shall at all times be subject and subordinate to the
         terms and provisions of the Master Lease. Except for the Excluded
         Sections of the Master Lease and except as otherwise set forth in this
         Sublease, all of the terms and conditions contained in the Master Lease
         are hereby incorporated herein by this reference as terms and
         conditions of this Sublease, except that references in the Master Lease
         to the terms listed in Column A below shall be deemed to be references
         to the terms set forth in this Sublease listed in the same row in
         Column B below:

                     COLUMN A                          COLUMN B
                     --------                          --------

                       Lease                           Sublease

                     Landlord                         Sublandlord

                      Tenant                           Subtenant

                       Term                          Sublease Term

                     Premises                     Subleased Premises

                 Commencement Date            Sublease Commencement Date

         Subtenant shall not cause a default under the Master Lease or permit
         its employees, agents, contractors or invitees to cause a default under
         the Master Lease.

         Notwithstanding any other provision of this Sublease, Sublandlord, as
         sublandlord under this Sublease, shall have the benefit of all rights,
         waivers, remedies and

<PAGE>

         limitations of liability enjoyed by Master Landlord, as the
         landlord under the Master Lease, but (a) Sublandlord shall have no
         obligation under this Sublease to perform the obligations of Master
         Landlord, as landlord under the Master Lease, including, without
         limitation, any obligation to provide services or maintain insurance;
         (b) Sublandlord shall not be bound by any representations or
         warranties of the Master Landlord under the Master Lease; (c) in any
         instance where the consent of Master Landlord, as the landlord under
         the Master Lease, is required under the terms of the Master Lease, the
         consent of Sublandlord and Master Landlord shall be required; and (d)
         Sublandlord shall not be liable to Subtenant for any failure or delay
         in Master Landlord's performance of its obligations, as landlord under
         the Master Lease, provided that Sublandlord shall make all reasonable
         efforts to assist Subtenant in obtaining Master Landlord's performance
         of its obligations under the Master Lease.

         Upon the default by Subtenant in the full and timely payment and
         performance of its obligations under the Sublease, Sublandlord may
         exercise any and all rights and remedies granted to Master Landlord by
         the Master Lease with respect to default by the Tenant or Lessee under
         the Master Lease. In the event that Subtenant breaches any of the
         terms, conditions or covenants of this Sublease or of the Master Lease
         and fails to remedy such breach within five (5) days after written
         notice for a monetary default and thirty (30) days after written notice
         for a non-monetary default, Sublandlord shall have the right, but not
         the obligation, to cure such breach and charge Subtenant for the costs
         incurred thereby, which costs Subtenant shall pay to Sublandlord upon
         demand. Subtenant shall not commit or suffer any act or omission that
         will violate any of the provisions of the Master Lease. If the Master
         Lease terminates for any reason, this Sublease shall terminate and the
         parties shall be relieved of any further liability or obligation under
         this Sublease; provided, however, that Subtenant shall pay to
         Sublandlord all sums due and accrued under this Sublease as of the
         termination date.

         Notwithstanding any contrary provision of this Sublease, (i) in any
         instances where Master Landlord, as landlord under the Lease, has a
         certain period of time in which to notify Sublandlord, as tenant under
         the Master Lease, whether Master Landlord will or will not take any
         particular action, Sublandlord, as landlord under this Sublease, shall
         have an additional ten (10) day period after receiving such notice in
         which to notify Subtenant (except in the case of a request by Subtenant
         for consent by Sublandlord to a Transfer, in which event Sublandlord
         shall so notify Subtenant within fifteen (15) days), (ii) in any
         instance where Sublandlord, as tenant under the Master Lease, has a
         certain period of time in which to notify Master Landlord as landlord
         under the Lease, whether Sublandlord will or will not take any
         particular action, Subtenant, as tenant under this Sublease, must
         notify Sublandlord, as landlord under this Sublease, at least five (5)
         days before the end of such period, but in no event shall Subtenant
         have a period of less than five (5) days in which so to notify
         Sublandlord unless the relevant period under the Master Lease is five
         days or less, in which case the period under this Sublease shall be two
         (2) days less than the period provided to Sublandlord under the Lease,
         (iii) in any instance where Sublandlord, as tenant

<PAGE>

         under the Master Lease, has a certain period of time in which to
         pay money to Master Landlord as landlord under the Lease, Subtenant,
         as tenant under this Sublease, must, unless otherwise herein provided,
         so pay Sublandlord, as landlord under this Sublease, at least five (5)
         business days before the end of such period, but in no event shall
         Subtenant have a period of less than five (5) days in which so to pay
         Sublandlord unless the relevant period under the Master Lease is five
         days or less, in which case the period under this Sublease shall be
         two (2) days less than the period provided to Sublandlord under the
         Lease, and (iv) in any instance where a specific grace period is
         granted to Sublandlord, as tenant under the Master Lease, before
         Sublandlord is considered in default under the Master Lease,
         Subtenant, as tenant under this Sublease, shall be deemed to have a
         grace period that is ten (10) days less than Sublandlord before
         Subtenant is considered in default under this Sublease, but in no
         event shall any grace period be reduced to less than five days unless
         the relevant period under the Master Lease is six (6) days or less, in
         which case the period under this Sublease shall be two (2) days less
         than the period provided to Sublandlord under the Master Lease. In no
         event shall Master Landlord or Sublandlord be liable for any
         consequential damages suffered by Subtenant in connection with any
         breach of this Sublease or otherwise.

12.      HAZARDOUS MATERIALS

         Subtenant shall use or keep no inflammable, explosive or dangerous
         fluids or substances in the Premises or Building, or about the
         Property, except for commercially reasonable quantities of cleaning and
         office supplies, provided that Subtenant keeps, maintains, stores,
         reuses and disposes of such materials in accordance with all applicable
         laws and regulations and all manufacturer's directions. Subtenant shall
         not use, store, install, spill, remove, release or dispose of, within
         or about the Premises or any other portion of the Property, any
         asbestos-containing materials or any solid, liquid or gaseous material
         now or subsequently considered toxic or hazardous under the provisions
         of 42 U.S.C. Section 9601 et seq. or any other applicable environmental
         law that may now or later be in effect. Subtenant shall comply with all
         laws pertaining to and governing the use of these materials by
         Subtenant, and shall remain solely liable for the costs of abatement
         and removal. Sublandlord has no knowledge of any hazardous materials in
         place at the Subleased Premises and shall indemnify Subtenant for any
         damages resulting from the presence of hazardous materials at the
         Subleased Premises.

13.      HOLDING OVER

         If Subtenant remains in possession of the Subleased Premises or any
         part thereof after the expiration or other termination of the Sublease
         Term hereof, such occupancy shall be as a tenancy at sufferance at a
         rental in the amount of one hundred and fifty percent (150%) of the
         last installment of Yearly Rent, and upon all the other provisions of
         this Sublease pertaining to the obligations of Subtenant.
         Notwithstanding anything to the contrary herein, Subtenant shall be
         liable to

<PAGE>

         Sublandlord for all costs, liabilities, losses and expenses
         incurred by Sublandlord as a result of Subtenant's holding over.

14.      ATTORNEYS' FEES; OTHER FEES

         If Sublandlord or Subtenant shall commence an action against the other
         arising out of or in connection with this Sublease, the prevailing
         party shall be entitled to recover its costs of suit and reasonable
         attorneys' fees.

15.      NOTICES OR DEMANDS

         All notices and demands under this Sublease shall be in writing and
         shall be effective (except for notices to Master Landlord, which shall
         be given in accordance with the provisions of the Master Lease) upon
         the earlier of (a) receipt at the Sublandlord's Notice Addresses or the
         Subtenant's Notice Addresses, or the notice address of the Master
         Landlord set forth in the Master Lease, as the case may be, by the
         party being served, or (b) upon delivery being refused. All such
         notices or demands shall be sent by United States certified mail,
         return receipt requested, postage prepaid, or by a nationally
         recognized overnight delivery service that provides tracking and proof
         of receipt. Either party may change its address for notices and demands
         under this Sublease by ten (10) days' notice to the other party.

16.      SIGNAGE

         Subtenant shall be listed, at Subtenant's sole cost and expense, on the
         alphabetical directory board or other directory device listing tenants
         in the main lobby of the Building. Subtenant may also install, at
         Subtenant's sole cost and expense, a sign of Subtenant's name and
         standard logo on the main entry to the Subleased Premises, subject to
         Sublandlord's and Master Landlord's written approval, which approval on
         the part of Sublandlord shall not be unreasonably withheld, and in
         compliance with all applicable laws and codes. Subtenant shall not
         place any other sign in or on the Building or the Subleased Premises
         without the prior written consent of Sublandlord and Master Landlord,
         which consent may be withheld or conditioned in Sublandlord's and
         Master Landlord's sole and absolute discretion.

17.      PARKING

         Subject to the terms and conditions of the Master Lease, Sublandlord
         shall provide Subtenant with the right to use the number of Parking
         Spaces listed in Article I hereof as Parking Spaces available to
         Subtenant on a non-exclusive basis, at no additional charge.

18.      SATELLITE ANTENNA

<PAGE>

         Subtenant, at Subtenant's sole cost and expense, shall have the right
         to install a satellite antenna on the roof of 34 Crosby Drive (Building
         8), subject to Master Landlord's consent and any applicable municipal
         ordinances. Subtenant shall insure and maintain the satellite antenna
         throughout the Sublease Term and shall remove the satellite antenna
         upon the expiration or earlier termination of the Sublease Term.
         Sublandlord shall cooperate with Subtenant in obtaining any necessary
         governmental approvals with respect to the satellite antenna.

19.      MASTER LANDLORD'S CONSENT

         This Sublease is expressly conditioned upon the receipt of Master
         Landlord's written consent hereto. Subtenant agrees to cooperate with
         Sublandlord in providing such information as is necessary to satisfy
         such condition and to execute all agreements reasonably requested by
         Master Landlord in connection therewith.

20.      NON-DISTURBANCE

         Subtenant shall use reasonable efforts to secure a non-disturbance
         agreement from Master Landlord.

21.      CHOICE OF LAW

         This Sublease shall be governed by the laws of the Commonwealth of
         Massachusetts.

22.      ENTIRE AGREEMENT

         This Sublease, together with any exhibits and attachments hereto and
         the Master Lease, constitutes the entire agreement between Sublandlord
         and Subtenant relative to the Subleased Premises, and this Sublease and
         the exhibits and attachments may be altered, amended or revoked only by
         an instrument in writing signed by both Sublandlord and Subtenant.
         Sublandlord and Subtenant agree hereby that all prior or
         contemporaneous oral discussions, letters or written documents between
         and among themselves and their agents and representatives relative to
         the subleasing of the Subleased Premises are merged in or revoked by
         this Sublease.

23.      SUCCESSORS AND ASSIGNS

         This Sublease shall inure to the benefit of and be binding upon the
         respective heirs, administrators, executors, successors and assigns of
         the parties hereto; provided, however, that this provision shall not be
         construed to allow an assignment or subletting that is otherwise
         specifically prohibited hereby.

24.      SECTION AND PARAGRAPH HEADINGS

         The section and paragraph headings are included only for the
         convenience of the

<PAGE>

         parties and are not part of this Sublease and shall not be used
         to interpret the meaning of provisions contained herein or the intent
         of the parties hereto.

25.      REPRESENTATIONS AND WARRANTIES; AUTHORITY

         Sublandlord and Subtenant each represent and warrant to the other that
         the individual(s) executing and delivering this Sublease on its behalf
         is/are duly authorized to do so and that this Sublease is binding on
         Subtenant and Sublandlord in accordance with its terms. Simultaneously
         with the execution of this Sublease, Subtenant shall deliver evidence
         of such authority to Sublandlord in a form reasonably satisfactory to
         Sublandlord.

         Sublandlord represents and warrants that (a) to Sublandlord's actual
         knowledge, Master Landlord is not in material default under the Master
         Lease, nor has any event occurred which, after any applicable notice
         and/or the expiration of any grace period, shall constitute a material
         default by Master Landlord under the Master Lease; and (b) to
         Sublandlord's actual knowledge, Sublandlord is not in material default
         under the Master Lease, nor has any event occurred which, after any
         applicable notice and/or the expiration of any grace period, shall
         constitute a material default by Sublandlord under the Master Lease.

         Except as expressly set forth in this Sublease, no representation or
         warranty has been given by either party, its agents and
         representatives, with respect to the subject matter of this Sublease,
         and neither party has relied upon any representations or warranty not
         expressly set forth herein.

26.      BROKERS

         Sublandlord and Subtenant each represent and warrant to the other that
         it has not dealt with any broker other than the Brokers identified in
         Article I hereof in connection with the consummation of this Sublease.
         Sublandlord and Subtenant each shall indemnify and hold harmless the
         other against any loss, damage, claims or liabilities arising out of
         the inaccuracy of its representation or the breach of its warranty set
         forth in the previous sentence. Sublandlord shall be solely responsible
         for the payment of the brokerage commission due to the Brokers pursuant
         to a separate written agreement.

27.      NO OFFER

         The submission of this Sublease or some or all of its provisions for
         examination does not constitute an option or an offer to enter into
         this Sublease, it being understood and agreed that neither Sublandlord
         nor Subtenant shall be legally bound hereunder unless and until this
         Sublease has been executed and delivered by both Sublandlord and
         Subtenant, and then subject to the conditions hereof, including Section
         19.

<PAGE>

IN WITNESS WHEREOF, the parties have caused this Sublease to be signed by their
duly authorized representatives to be effective on the date first set out above.

SUBLANDLORD:                                SUBTENANT:
-----------                                 ---------

RSA SECURITY, INC.                          NVIDIA CORPORATION

By: /s/ Jeffrey D. Glidden                  By: /s/ Stephan Pettigrew
    --------------------------------            ------------------------------

Print Name: Jeffrey D. Glidden              Print Name: Stephan Pettigrew

Print Title: Chief Financial Officer        Print Title: Legal Counsel

Date: September 19, 2002                    Date: September 16, 2002

LIST OF EXHIBITS

Exhibit A  -  Master Lease and Amendments

Exhibit B  -  Plan showing Subleased Premises

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