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Subject: Re: Opteron Specifics

Author: Jay Urbanski

Date: 20:11:35 07/01/03

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On June 30, 2003 at 23:22:47, Peter Stayne wrote:

>Detailed stuff here:
>
>http://www.amdboard.com/opteron_opn.html
>
>As has been reported many times before, the only difference between the 100's,
>200's and 800's is the number of HyperTransport links. I'd love to see some
>benches to show how much those links benefit performance.
>

For something like Chess Engines those extra links won't do squat.  They allow
you to connect more CPU's together for larger SMPs or to connect the CPUs to
I/O.

You *could* make a two way with two HT links between them using the 8XX
processors instead of one the 2XX processors, and while that might help with a
lot of floating point scientific applications that bottleneck on memory
bandwidth, it's not going to affect the performance of chess engines - which
don't.



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