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Subject: Re: AMD Sempron for chess?

Author: Aaron Gordon

Date: 15:18:27 11/10/04

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On November 10, 2004 at 08:26:35, Andrew Williams wrote:

>On November 10, 2004 at 01:46:51, Ray Banks wrote:
>
>>On November 09, 2004 at 15:48:53, José Berdiñas Bonefua wrote:
>>
>>>How is this mP for chess?
>>
>>Exactly the same as an Athlon XP at the same actual clock speed (not the
>>+rating)
>
>I'm not so sure about this. I think the Sempron's cache is smaller (256k vs
>512k). That would certainly have an impact for my program.
>
>Andrew

For chess going from 256k to 512k made next to zero difference in all of the
chess programs I tested. Most were 1% slower at 256k vs 512. Lots gained nothing
at all. The only one that gained more than 1% or so was Shredder 8, and that was
about 3%.


If you'd like the exact numbers I'll try to dig up the old post I made here a
month or so ago.

Also, they have Semprons for Socket 754 (Athlon 64) based systems. These should
be pretty much identical in speed to Athlon 64 at the same clock speed as far as
chess goes. Adding extra memory bandwidth and L2 is NOT cost effective for
increasing chess speed. The gain is in most cases nothing, and when you do get a
gain it is extremely small.



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