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Technology Stocks : Intel Corporation (INTC)

INTC 36.34

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Dec 23 3:59 PM EST

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To: Timothy Liu who wrote (150467)	11/29/2001 9:53:56 PM
From: kapkan4u	Read Replies (1) of 186894

The P4 decoder passes uops to the execution engine directly while building a new trace. In this mode P4 operates like a PIII with a single decoder. So if P4 ID is running at 2.0GHz and PIII's IDs are running 1.0GHz the speed of decode should be about the same. P4 has higher branch mispredict penalty, but it also has twice (2.0GHz) as fast OOO execution engine and four times as fast (4.0GHz) add operations. So if P4's ID is running at 2.0GHz one would expect P4 to be no more than say 30% slower than a 1.0GHz PIII. I have no idea what the relative performance on this code would be, but I think sooner or later someone will try it. Kap

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