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Subject: Re: Crafty likes Celeron 300, but Fritz less

Author: Ian Kennedy

Date: 11:40:18 05/03/99

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On May 03, 1999 at 12:58:39, James Robertson wrote:

>On May 03, 1999 at 03:09:32, Jouni Uski wrote:
>
>>I have compared Crafty 16.6 and Fritz5.32 in P90 and Celeron 300 PCs. Here is
>>average NPS:
>>
>>                    P90        Cel 300       speed-up
>>    Fritz 5.32      88 kn/s    288 kn/s      3.3 x
>>    Crafty 16.6     20 kn/s    175 kn/s      8.8 x !!
>
>I think it is due to the bitboards. The newer chips have much better machine
>operations (bsf, bsr) to do 64-bit math, so Crafty will have a much better time
>on the newer machine.
>
>James

Not quite sure what you're saying here since bsr and bsf have been around since
the 386, do you mean they have been improved in some way?

Ian Kennedy



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