page_title: List of Intel microprocessors
section_title: Original Pentium
hierarchical_section_title: List of Intel microprocessors / All processors / 32-bit processors: P5 microarchitecture / Original Pentium
caption_attribution_description: English: CPU Intel Pentium 133
context_page_description: This generational list of Intel processors attempts to present all of Intel's processors from the pioneering 4-bit 4004 to the present high-end offerings. Concise technical data is given for each product.
context_section_description: Bus width: 64 bits
  System bus clock rate 60 or 66 MHz
  Address bus: 32 bits
  Addressable memory 4 GB
  Virtual Memory 64 TB
  Superscalar architecture
  Runs on 3.3 Volts (except the very first generation "P5")
  Used in desktops
  8 KB of instruction cache
  8 KB of data cache
  P5 – 0.8 μm process technology
  Introduced March 22, 1993
  3.1 million transistors
  The only Pentium to run on 5 Volts
  Socket 4 273 pin PGA Package
  Package dimensions 2.16″ × 2.16″
  Family 5 model 1
  Variants
  60 MHz, 100 MIPS (70.4 SPECint92, 55.1 SPECfp92 on Xpress 256 KB L2)
  66 MHz, 112 MIPS (77.9 SPECint92, 63.6 SPECfp92 on Xpress 256 KB L2)
  P54 – 0.6 μm process technology
  Socket 5 296/320 pin PGA package
  3.2 million transistors
  Variants
  75 MHz, 126.5 MIPS (2.31 SPECint95, 2.02 SPECfp95 on Gateway P5 256K L2)
  Introduced October 10, 1994
  90, 100 MHz, 149.8 and 166.3 MIPS respectively (2.74 SPECint95, 2.39 SPECfp95 on Gateway P5 256K L2 and 3.30 SPECint95, 2.59 SPECfp95 on Xpress 1ML2 respectively)
  Introduced March 7, 1994
  P54CQS – 0.35 μm process technology
  Socket 5 296/320 pin PGA package
  3.2 million transistors
  Variants
  120 MHz, 203 MIPS (3.72 SPECint95, 2.81 SPECfp95 on Xpress 1MB L2)
  Introduced March 27, 1995
  P54CS – 0.35 μm process technology
  3.3 million transistors
  90 mm² die size
  Family 5 model 2
  Variants
  Socket 5 296/320 pin PGA package
  133 MHz, 218.9 MIPS (4.14 SPECint95, 3.12 SPECfp95 on Xpress 1MB L2)
  Introduced June 12, 1995
  150, 166 MHz, 230 and 247 MIPS respectively
  Introduced January 4, 1996
  Socket 7 296/321 pin PGA package
  200 MHz, 270 MIPS (5.47 SPECint95, 3.68 SPECfp95)
  Introduced June 10, 1996
caption: Intel Pentium P54 133 MHz
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