P5 microarchitecture processors

Original Pentium

  • 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 5 volts
  • Used in desktops
  • 16 KB of L1 cache
  • P5 – 0.8 µm process technology
    • Introduced March 22, 1993
    • Number of transistors 3.1 million
    • Socket 4 273 pin PGA processor package
    • Package dimensions 2.16" × 2.16"
    • Family 5 model 1
    • Variants
      • 60 MHz with 100 MIPS (70.4 SPECint92, 55.1 SPECfp92 on Xpress 256 KB L2)
      • 66 MHz with 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
    • Number of transistors 3.2 million
    • Variants
      • 75 MHz Introduced October 10, 1994
      • 90, 100 MHz Introduced March 7, 1994
  • P54CQS – 0.35 µm process technology
    • Socket 5 296/320 pin PGA package
    • Number of transistors 3.2 million
    • Variants
      • 120 MHz Introduced March 27, 1995
  • P54CS – 0.35 µm process technology
    • Number of transistors 3.3 million
    • 90 mm² die size
    • Family 5 model 2
    • Variants
    • Socket 5 296/320 pin PGA package
      • 133 MHz Introduced June 12, 1995
      • 150, 166 MHz Introduced January 4, 1996
    • Socket 7 296/321 pin PGA package
      • 200 MHz Introduced June 10, 1996

[edit] Pentium with MMX Technology

  • P55C – 0.35 µm process technology
    • Introduced January 8, 1997
    • Intel MMX (instruction set) support
    • Socket 7 296/321 pin PGA (pin grid array) package
    • 32 KB L1 cache
    • Number of transistors 4.5 million
    • System bus clock rate 66 MHz
    • Basic P55C is family 5 model 4, mobile are family 5 model 7 and 8
    • Variants
      • 166, 200 MHz Introduced January 8, 1997
      • 233 MHz Introduced June 2, 1997
      • 133 MHz (Mobile)
      • 166, 266 MHz (Mobile) Introduced January 12, 1998
      • 200, 233 MHz (Mobile) Introduced September 8, 1997
      • 300 MHz (Mobile) Introduced January 7, 1999

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