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>> I got the impression that x86 CPUs are designed to communicate with only
>> a fixed number of peers.
>
> http://www.cray.com/Products/XT/Specifications.aspx
>
> Opterons ... x86 ;)
Yes, a conspicuous number of supercomputers use Opteron and not Xeon.
>> Given that the reviews talk about 1-chip, 2-chip, 4-chip and even
>> 8-chip, I very much doubt anybody has bothered to design a 96-chip part.
>> Who would they sell it to, after all? (And wouldn't it need 96 extra
>> pins??)
>
> Cray has, but then, it's a purpose-built machine.
I meant that the CPU has to be designed to operate with X number of
peers - so you'd have to design a Opteron or whatever with pins for 96
other peers. Which presumably AMD haven't done.
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