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Technology Stocks : Advanced Micro Devices - Moderated (AMD) -- Ignore unavailable to you. Want to Upgrade?

To: wanna_bmw who wrote (52877)	8/28/2001 9:57:59 PM
From: pgerassi	Read Replies (1) \| Respond to of 275872

Wanna_bmw: Re: "But you can reduce transcendental functions down to add and shift instructions. In the case of SuperPI, this would give Pentium 4 an extreme advantage, since both of those instructions can be fully pipelined, and take advantage of the double pumped ALUs." BEEP!!! Wrong answer! P4 is missing a barrel shifter and takes more than 1 clock cycle to do a large shift. Thus P4 can not pipeline shifts. No other modern x86 CPU has forgotten to include a barrel shifter. Athlon gets a tremendous boost over P4 with any program doing a lot of shifts. Communication programs anyone? Better check on P4 micro architecture before putting your foot in your mouth. Pete