Advanced Micro Devices - Moderated (AMD) Message Board

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Technology Stocks : Advanced Micro Devices - Moderated (AMD)

AMD 217.54

+1.6%

Nov 28 12:59 PM EST

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To: jcholewa who wrote (19218)	11/15/2000 2:14:25 PM
From: Charles R	Read Replies (2) of 275872

<You said SSE2 optimizations. That means either double precision vector floating point (which doesn't usually apply to the games) or vector integer, which is unimpressive in the P4 (it's equal to regular MMX, but only if you make your code more explicitly parallel).> I do not know how SSE2 is being used in game optimization. Kap seems to have answered how the SpecFP optimizations are being done. As you see it has very little to do with prefetch and a lot to do with SSE2 optimizations. If Kap is right and there is only a hardware prefetch, I wouldn't be surprised if the prefetch gains amount to much. (Hardware prefetch from experience can even lead to performance decrease.) <Please ask them for details. They may be speaking about CAD-type operations, which could be immensely assisted by SSE2's 4-way double precision vector floating-point capability.> I will try to see if I can get any meaningful details.

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