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Politics : Formerly About Advanced Micro Devices
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To: Elmer who wrote (98541)3/15/2000 11:38:00 AM
From: Petz   of 1582177
 
RE:<Athlon FP is only slightly faster>
The Athlon FPU can do a double precision multiply-add in one clock cycle where the P3 needs two clock cycles. Thats a little more than "slightly" in my book.

The problem is that unless the data is coming from and going to the L1 cache the memory bandwidth can't keep up.

On chip L2, or, better yet, on chip L2 with 256 bit interface as JC's has reported, will give up to 2-8x the bandwidth to the L2. (probably 4x) If one or more of the data arrays are huge and residing in main memory, PC133 will help by 33% and DDR 2100 will double throughput.

Petz
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