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Subject: Re: No dual athlons sighted!

Author: Andrew Dados

Date: 15:43:24 03/27/00

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On March 27, 2000 at 18:38:50, Sean Empey wrote:

>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.

All that is pretty cool, but does not change the fact there are no SMP Athlon
mobos on market yet. I read somewhere there will be avail in 4th quarter of
2000...



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