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Subject: Re: For Johan - comparison of "old" hardware

Author: Johan de Koning

Date: 22:30:44 04/05/04

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On April 05, 2004 at 19:18:15, John Merlino wrote:

>On April 05, 2004 at 12:05:59, John Merlino wrote:
>
>>On April 05, 2004 at 11:39:55, Rex wrote:
>>
>>>Here move Rxe3 was played.
>>>
>>>How soon does other programs find it?
>>>
>>>[D]r5k1/1RR2p1p/5Ppb/3pB3/3Pr1P1/4P2P/5QK1/q7 b - - 0 51
>>
>>Chessmaster 9000, SKR personality on a P4-2.4, finds Rxe3 in 38 seconds, but
>>only sees it as a draw even after 20 minutes:
>>
>>Time   Depth   Score   Positions       Moves
...
>>0:38   1/10    0.20    8358494         51...Rxe3 52.Rxf7 Rxe5 53.Rfc7
...
>Johan,
>
>You might be interested, just for comparison's sake, to know that my work
>computer (AMD 2500+ @1.83GHz) ran this position over 20% faster. It found Rxe3
>in 30 seconds.

That would be more like 27 % faster (with large margings though).
Which is indeed not under 20 % faster.
But slightly disappointing, hence hopefully an impure comparison.

With default settings, but almost same node counts, I get:
  37.8  AMD K7     Thunderbird  1333 MHz
  27.1  AMD XP2200 Thoroughbred 1800 MHz
I'd expect your Barton2500@1833 compared to my Thoro2200@1800
to perform somewhere between 1833/1800 and 2500/2200.

On the bright side, this shows there's nothing to be ashamed of
when confusing AMD ratings with AMD MHzs. Since they both are
meaningless, being confused is the only sane option!

... Johan



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