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Subject: Re: No dual athlons sighted!

Author: Sean Empey

Date: 15:38:50 03/27/00

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On March 27, 2000 at 17:27:17, Dan Andersson wrote:

>Duh, I seem to remember them not being electrically compatible. Am I wrong? And
>the alpha chipset is certainly not designed for the Athlon. Now give me som
>links to resources for getting Dual Athlon Mobos.

the Atlon use's the Alpha EV6 bus protocol in place of the current GTL+ protocol
as used by Intel. This would make Slot A and Slot 1 electrically incompatiable.

This centres around the EV6's “Point to Point” topology, which means that each
CPU is given a separate pipeline to the chipset. This means that when 2 CPU’s
are used they can both utilise their own 1.6 Gb of bandwidth between the CPU and
chipset. When a second CPU is added to the system, the amount of bandwidth per
CPU does not diminish. This compares favorably to the GTL+ protocol which forces
all CPU’s to share bandwidth between the CPU and chipset, meaning that when a
second CPU is added the bandwidth available to both CPU’s is halved. The EV6
means that AMD’s Athlon has a big advantage over the Pentium III and Xeon
processors when it comes to multi-processor systems.

You can check with all the Slot A MB manufacturers for availability.





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