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Subject: Re: AMD Processors for Chess ?

Author: Francesco Di Tolla

Date: 05:34:20 07/09/99

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>amdk6-2 has twice the cache of the intel pentium 1 cpu.
>although pentium1 mmx has twice the cache the pentium 1 without mmx has.
>Still k6-2 has bigger cache !
>therefore k6-2 is faster than pentium1 mmx.
>and pentium2 has only 32KB internal + 512 external (half speed).
>but k6-3 has 256 INTERNAL ! + 1MB pipeline-burst as external !!
>
>the engine size and evaluation part of cstal is bigger than that
>of mchess and that of the king.
>i know you don't like this, but its true.
>benchmarks show this.

I'd like to address one point: when you compare a celeron with a pentium two
your argument is fine.
When you compare AMD and Intel the main issue is not cache is the core that
interprets the asm instructions. So even if they had the same cache (sizes and
speed) they would produce different results.

It is well known that Intel chips are faster on floating point while AMD is
smarter at scheduling and probably also with integers. So a program that uses
almost only integers, like a chess program, should like AMD cpus, but some (like
Fritz i guess) might have been tweaked a lot fot Intel core.

regards
Franz



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