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Technology Stocks : Intel Corporation (INTC) -- Ignore unavailable to you. Want to Upgrade?

To: Dan3 who wrote (170447)	8/31/2002 12:01:27 PM
From: steve harris	Respond to of 186894

Dan, Intel-Hyperthreading-BAPCO-AMD Now there is a mix that will be interesting. Thanks for the info on the execution units. Steve

To: Dan3 who wrote (170447)	8/31/2002 12:47:55 PM
From: Ali Chen	Read Replies (1) \| Respond to of 186894

"The funny thing is that Athlon, with its additional instruction units, would probably benefit much more from hyperthreading than P4, which is maxed out by a single thread far more often." With all due respect, this makes no sense. A single processor executes threads sequentially, therefore there will be no additional benefits for 1P Athlon, only extra time-sharing overhead. The P4 will have some benefits by sharing its "sparsely filled" pipeline between two parallel threads, therefore it will be doing more work per clock than it already does, and quite competitively with regard to Athlon. Actually, the hyperthreading is not about sharing the pipes on per execution unit basis. It is more likely about sharing the pipes when the other thread is completely stalled due to a cache miss. However, the speedup will be offset by the dual-processor OS bookkeeping overhead, so the level of overall benefits is not clear at this point. - Ali