Author: Odd Gunnar Malin
Date: 23:50:59 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. 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. 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. Have you looked at the ply, this is if you manage to set the programs up so it is comparable. There exist some data for how much a ply is worth. Eg. the Belle test was (from memory) around 200 elo/ply and a newer from Heinz nearer 100 elo/ply. I have my doupt when calculating elo with doubling the speed when the gap is too big. Eg. Playing PocketGrandmaster at 1min/game should be 7*70 of a two hour/game. Well I don't know the strenght at 2 hour but at 1 min it is around 1000 or less when looking at the game (of course subjective). Odd Gunnar
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