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Subject: Re: How strong is PF2 on a 400 Mhz Axim running PPC 2003 ?

Author: Drexel,Michael

Date: 22:57:02 09/21/03

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On September 21, 2003 at 19:54:12, Mike Byrne wrote:

>Current SDDF ratings
>
>  Program/Computer Rating
>1 Shredder 7.04 UCI 256MB Athlon 1200 MHz  2810
>2 Shredder 7.0 256MB Athlon 1200 MHz  2770
>3 Fritz 8.0 256MB Athlon 1200 MHz  2762
>4 Deep Fritz 7.0 256MB Athlon 1200 MHz  2761
>5 Fritz 7.0 256MB Athlon 1200 MHz  2742
>6 Shredder 6.0 Pad UCI 256MB Athlon 1200  2724
>7 Shredder 6.0 256MB Athlon 1200 MHz  2721
>8 Chess Tiger 15.0 256MB Athlon 1200 MHz  2720
>9 Shredder 7.0 UCI 128MB K6-2 450 MHz  2717
>9 Chess Tiger 14.0 CB 256MB Athlon 1200  2717
>
>Based on everything I have looked at (analysis of positions etc), PF 2 is more
>akin to Shredder 7 and not Shredder 7.04.   On a Dell Axim running at 400 Mhz,
>it appears to be about 12=15x slower than a P4 1.7 Ghz which runs pretty close
>to a P3 1.2Ghz.
>
>If one assumes for the moment that doubling of speed is worth 50 points (which
>is high IMO - I think it's closer to 35-40 points at the high end) - then we can
>work backwards.  For simplicity. let's just say an Axim is 16X slower than 1,2
>Ghz (it's not - but this make the numbers easier to work with).
>
>16x = 2^4.  So we take 50 x 4= 200 points - so in the case PF2 on a Dell Axim
>running Mobile 2003 is equal to 2570 to SSDF conservatively.

38 Shredder 4.0  128MB  K6-2 450 MHz       2571   23   -22   986   58%  2510

I think 2570 is way too high. Somewhere between 2450 and 2500 is more realistic.

This over 200
>points higher than any estimate for any program running on the Palm Tungsten and
>clearly ahead of any dedidicated unit..  This clearly in IM range and maybe even
>weak GM level.

Usually you dont want to play tournament games against it anyway.
With imported Shredder7 book it would probably score ~50% against any Top
Grandmaster in rapid chess (15,25 or 30 min) provided that they dont know the
progam nor its book. The strength would decrease after 20-30 games of course
because the human has effective learning.

Michael

A 206 Mhz ARM would be about 100 points less than this or 2400
>SSDF under this scenario.  IMO, it is only about 70 points less.



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