Author: Chris Carson
Date: 13:02:55 03/30/03
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On March 30, 2003 at 15:24:13, James Constance wrote: >On March 30, 2003 at 13:35:07, Chris Carson wrote: > >>On March 30, 2003 at 11:53:21, James Constance wrote: >> >>>1. Why is there such a difference in Nodes Per Second in Pocket PCs when >>>compared with PCs? e.g. Shredder on my Athlon 1200 Mhz might do 180,000 NPS for >>>a given position, whereas my StrongArm 200 Mhz does only 4,500 NPS for the same >>>position. That's a factor of 40 - I was optimistically expecting it to be >>>closer to the ratio in processor speeds. >>> >>>2. Anybody have a stab at how much this reduces the SSDF quoted rating by? >>> >>>cheers! >> >>I collected NPS for a few Pocket PC's and Palm devices and also for the SW on >>PC's. The 206 seems to be about the same NPS as a 33Mhz 486 and about the same >>playing strength. For a specific program (ie Ruffian or Chess Tiger), the ELO >>will drop by about 70 points for each 50% reduction in NPS. So a Pocket PC >>206Mhz is about 400 points weaker than an AMD 1.2Ghz. Same for the Palm. Take >>a look at the SSDF list: >> >>http://w1.859.telia.com/~u85924109/ssdf/list.htm >> >>Chess Tiger 15 AMD 1.2Ghz is 2726 SSDF >>Chess Tiger 14.9 Palm m515 is 2101 SSDF >> >>Ruffian 1.01 AMD 1.2Ghx is 2671 SSDF >>Ruffian 1.04 ARM 206Mhz is 2050 aprox. >> >>I have played all four of the above and this is also my experience. I am rated >>2150. I have also posted NPS for the four above in previous posts as well as >>Chess Genius (similiar experience on both machines for CG). > > >Interesting reply, thanks. Do you mean 2250 for Ruffian, then? No, 2050, I ment 600 points less, not 400, type. Sorry.
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