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Subject: Re: Refuting nonsense about 64 bits servers/supercomputer chips

Author: Vincent Diepeveen

Date: 09:06:26 09/03/01

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On September 02, 2001 at 17:26:31, Tom Kerrigan wrote:

>On September 01, 2001 at 08:40:46, Vincent Diepeveen wrote:
[snip]

>>completely (especially price range), as well from the
>>servers from alpha and especially from SUN and all other cpu
>>brands when running 32 bits (computerchess) software,
>
>Seems like lots of computer chess programs are 64 bit now, and the Alpha can
>more than hold its own against any PC processor running either 32 or 64 bit
>code.

This is what i mean, an alpha 2 processor is around $20000 in the
store now. that's for a 833Mhz dual alpha.

A dual 1.2Ghz K7 of course blows that away for DIEP.

An alpha 633Mhz (21164) used to be for diep around the same
speed like a PII at 380Mhz.

And the PII was 17.3% faster than a PII
the K7 is another 10% faster than a P3
the palomino i have now is another few % faster.

21264 has about the same number of registers as a K7,
and the 21264 has huge costs for branch mispredictions.
The 4 instructions a clock it sometimes can do hardly make up
for the lack of 400Mhz in speed.

And that for a factor of 10 in price difference...

>-Tom



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