Pentium II

• Introduced May 7, 1997
• Pentium Pro with MMX and improved 16-bit performance
• 242-pin Slot 1 (SEC) processor package
• Slot 1
• Number of transistors 7.5 million
• 32 KB L1 cache
• 512 KB ½ bandwidth external L2 cache
• The only Pentium II that did not have the L2 cache at ½ bandwidth of the core was the Pentium II 450 PE.
• Klamath - 0.35 µm process technology (233, 266, 300 MHz)
  • 66 MHz system bus clock rate
  • Family 6 model 3
  • Variants
    • 233 MHz Introduced May 7, 1997
    • 266 MHz Introduced May 7, 1997
    • 300 MHz Introduced May 7, 1997
• Deschutes - 0.25 µm process technology (333, 350, 400, 450 MHz)
  • Introduced January 26, 1998
  • 66 MHz system bus clock rate (333 MHz variant), 100 MHz system bus clock rate for all models after
  • Family 6 model 5
  • Variants
    • 333 MHz Introduced January 26, 1998
    • 350 MHz Introduced April 15, 1998
    • 400 MHz Introduced April 15, 1998
    • 450 MHz Introduced August 24, 1998
    • 233 MHz (Mobile) Introduced April 2, 1998
    • 266 MHz (Mobile) Introduced April 2, 1998
    • 333 MHz Pentium II Overdrive processor for Socket 8 Introduced August 10, 1998; Engineering Sample Photo
    • 300 MHz (Mobile) Introduced September 9, 1998
    • 333 MHz (Mobile)