Author: Ed Schröder
Date: 10:02:09 11/04/97
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>Posted by Hansjoerg on November 04, 1997 at 09:26:47: >It was often said that MChess had run on a slower hardware than some >other programs running on the Pentium II/300. This might be wrong! >The speed difference between K6 and the Intel cpus is program dependent. >The german css magazine (4/97 and 5/97) (also some reader feedback) gave >some information about the speed difference. >Some results: >Rebel 8 on K6/233 20% faster than on Pentium 2/266 ! >Rebel 8 on K6/233 30% faster than on P200 MMX >Rebel 8 on K6/200 same speed as on Pentium 2/266 >MChess 5 on K6/200 20% faster than on Pentium P200 MMX >Hiarcs 6 on K6/200 15% faster than on Pentium P200 MMX >Genius 5 and Fritz 5 don't take advantage of the AMD K6 >(K6 has nearly same speed as the Pentium MMX with equal frequency) ! Interesting statistic. >I think that Fritz and Genius are very well optimized for intel cpus and >so can't take advantage of the special K6 jump prediction unit ?! I think it has nothing to do with cpu optimizations. The key is the big Level-1 cache of the AMD. Because Rebel uses a lot of memory and instructions in the evaluation function (the heart of each chess program) Rebel will profit more from the Level-1 cache than others. I assume a program like CSTAL profits even more. Chris? - Ed Schroder - >So, may be that the K6/233 is the fastest available cpu for MChess, >(and) the Pentium ||/300 the fastest cpu for Fritz !? >- or the diffrence is very small >- there are also some other dependencies (ram/cache size, >motherboard,..) >Hansjoerg
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