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Subject: Re: hardware question (SDRAM or DDRAM?)

Author: Jeremiah Penery

Date: 09:36:29 12/04/02

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On December 04, 2002 at 11:28:59, Volker Pittlik wrote:

>...
>
>>>bandwidth, but about the same latency with DDR - so i suppose i'm better off
>>>buying SDRAM for my application. any opinions of the experts?
>
>I recently bought two mainboards with 512 MB RAM each. One ECS K7S5A with SDRAM
>(Ifinieon PC133 CL3) and an Asus A7V-333 with DDR RAM (Samsung 333 CL 2.5). On
>the first one Crafty was faster. I have no idea why.
>
>XP2000, K7S5A, SDRAM
>Crafty v19.0
>
>White(1): bench
>Running benchmark. . .
>......
>Total nodes: 50265682
>Raw nodes per second: 966647
>Total elapsed time: 52
>SMP time-to-ply measurement: 12.307692
>--------------------------------------
>XP2000, A7V333, DDR RAM
>White(1): bench
>Running benchmark. . .
>......
>Total nodes: 50265682
>Raw nodes per second: 698134
>Total elapsed time: 72
>SMP time-to-ply measurement: 8.888889
>
>Volker

You must have something configured wrongly, or otherwise non-equal
configurations.  There's no way the first one should be almost 50% faster than
the second one, when everything is configured correctly.



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