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Subject: Paris/ AMD K6 us Pentium2 / MChess

Author: Hansjoerg

Date: 06:26:47 11/04/97


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) !

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 ?!

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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