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Computing (FOLDOC) dictionary
Pentium Pro
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processor (Known as "P6" during development) Intel's
successor to the Pentium processor, in development Jan 1995,
generally available 1995-11-01. The P6 has an internal
RISC architecture with a CISC-RISC translator, 3-way
"speculative execution", which Intel calls "DynamicExecution"). It also features branch prediction and
register renaming, and is superpipelined (14 stages).
The P6 is made as a two-chip assembly: the first chip is the
CPU and 16 kilobyte first-level cache (5.5 million
transistors) and the other is a 256 (or 512) kilobyte
second-level cache (15 million transistors). The first
version has a clock frequency of 133 Mhz and consumes about
20W of power. It is about twice as fast as the 100 MHz
Pentium. The original 0.35 micron versions of the Pentium Pro
released on 1995-11-01 run at 150 and 166 Mhz for desktop
machines and up to 200 Mhz for servers. Heat disspation is
about 20 Watts.