Author: Chris Carson
Date: 10:35:07 03/30/03
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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).
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