Author: Peter Stayne
Date: 11:34:13 06/07/03
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Hmmmm, interesting scores. But my system gets 2.5gb/s as well (SiSoft Sandra 2003.3.9.44), but I do understand that it's not the thoroughput that's the difference in chess. Pete On June 07, 2003 at 10:21:38, Bo Persson wrote: >On June 07, 2003 at 08:47:52, Peter Stayne wrote: > >>I believe I saw a thread a long time ago on the Winboard forum where Robert >>Hyatt was discussing this, but I can't find it. >> >>Given equivalent CPU capabilities, would an engine on a machine with one of the >>new 800MHz P4 QDR buses get a large or small or non-existent boost in speed over >>standard DDR at say, 266MHz? or even SDRAM at 100/133? >> >>My 533MHz QDR operates at the same frequency as even old PC133 SDRAM memory, but >>it delivers 4x as much data at each interval. Is the base frequency of the RAM >>more important, or the amount of data overall? > >For a chess program, the access time (latency) is more important than the >maximum throughput. > >I have 2 P4s, with different memory systems: > >P4 1.7 GHz, dual channel RDRAM, 2.5 GB/s stream throughput (SiSoft Sandra) >P4 2.5 GHz, 533 MHz SDRAM, 1.9 GB/s throughput > > >Guess which is the fastest for chess programs! :-) > >> >>Pete > > > >Bo Persson >bop2@telia.com
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