The Pentium III is a 2 volt device apparently released in both a SEC1 (Slot 1) or SEC2 (Slot2) configuration. It has a (split?) 32K L1 Cache. There is a 512K Error Correcting internal L2 cache apparently operating at half CPU speed. Power is 25.3 watts at 450MHz.
[Note that the above is based on Intel's descriptions of the CPU. Other sources have it at 1.8 volts and with a full CPU speed L2].
Benchmarks on the 450MHz CPU show little difference from a Pentium II at the same clock speed. Specint95 runs at 18.7 vs 18.5 for the PII. Sysmark98 on NT4.0 is identical at 204. Business Winstone is identical at 23.3. iComp 3 rating is 1450 vs 1240 for the Pentium II
A patch is apparently required with Windows NT and Windows 98 to work with Katmai New Instructions (KNI) also known as Streaming SIMD Extensions (SSE).
Most, not all, Pentium II motherboards can use a Pentium III without modification. A few will be unable to deliver enough power to support the PIII.
Return To Index Copyright 1994-2002 by Donald Kenney.