Pentium® 4/Pentium® 4 Prescott Differences
The following is a list of differences between the Pentium® 4 and the Pentium® 4 Prescott (i.e., the Pentium® 4 based on the 90nm process technology; a detailed description of Prescott can be found in “The Pentium® 4 Prescott” on page 1091):
This is the first IA32 processor based on Intel®'s 90nm process technology.
The instruction pipeline depth increased from 20 stages to 31 stages.
Branch prediction was improved again.
The number of WCBs was increased from six to eight.
The SSE3 instruction set, consisting of 13 new instructions, was added.
Two new instructions added to improve thread synchronization when using Hyper-Threading.
The Trace Cache BTB size was increased from 512 entries to 2K entries.
The L1 ...
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