The original versions -- 233/266/300 MHz are fabricated using a .35 micron process. The slower CPUs dissipate 34.8 watts at 233 MHz. The mobile and 333/350/400 MHz parts use a .25 micron process. The later CPUs dissipate 25.3 watts at 450 MHz. All Pentium IIs have 64 bit interfaces, 64GB address range (external) and 64TB internal address range.
Although similar in specification to the Pentium-Pro, the Pentium II includes the MMX instructions and also includes more advanced look ahead/parallel processing. The Pentium II appears to execute about 1.8 instructions per clock cycle with the 333MHz version coming in around 600MIPS. (Note that MIPS as a published benchmark has virtually disappeared in the past couple of years and that I am extrapolating it from early Pentiums based on increasingly shaky assumptions)
Return To Index Copyright 1994-2002 by Donald Kenney.