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Subject: Re: 8 way processor

Author: Robert Hyatt

Date: 14:49:31 08/24/02

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On August 23, 2002 at 12:11:07, Vincent Diepeveen wrote:

>On August 22, 2002 at 15:17:55, Rajen Gupta wrote:
>
>>On August 22, 2002 at 13:43:06, Robert Hyatt wrote:
>>
>>>On August 22, 2002 at 13:38:17, Rajen Gupta wrote:
>>>
>>>>in practical terms how much faster would an 8 way processor be for the most
>>>>scaleable commercial chess programme which i believe is shredder?
>>>>
>>>>rajen
>>>
>>>
>>>If it turned out to be 1.5X faster than a 4-way that would probably be
>>>a huge plus...  memory is a problem on 2-way and 8 way boxes...
>>
>>thanks: sorry for the obvious quesion but how fast is a 4 way compared to a
>>single or a 2 way(i assume a 2 way is about 1.75 times a single)
>
>A dual k7 is clocked at 2.13Ghz nowadays with the new cores on the
>market now. That's 4.26Ghz in total.
>
>The quad xeons are about 4 x 900Mhz = 3.6Ghz.
>
>So the quads are way slower from absolute viewpoint.
>
>>rajen


See Eugene's numbers.  AMD seems to suffer in dual configurations, way more
than Intel.  Not sure what is happening with the setups, but the numbers are
pretty sad.

A quad won't suffer much at all...  due to 4-way interleaving.  But duals
don't do memory very well...



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