[Beowulf] Shanghai vs Barcelona, Shanghai vs Nehalem

Mikhail Kuzminsky kus at free.net
Thu Oct 23 08:34:03 EDT 2008


In message from Jan Heichler <jan.heichler at gmx.net> (Wed, 22 Oct 2008 
20:27:40 +0200):
>Hallo Mikhail,
>
>Mittwoch, 22. Oktober 2008, meintest Du:
>
>MK> In message from "Ivan Oleynik" <iioleynik at gmail.com> (Tue, 21 Oct 
>2008
>MK> 18:15:49 -0400):
>>>I have heard that AMD Shanghai will be available in Nov 2008. Does 
>>>someone
>>>know the pricing and performance info and how is it compared with 
>>>Barcelona?
>>>Are there some informal comparisons of Shanghai vs Nehalem?
>
>MK> I beleive that Shanghai performance increase in comparison 
>w/Barcelona
>MK> will be practically defined only by possible higher Shanghai 
>MK> frequencies. 
>
>You can expect to see better performance in SPEC_CPU for Shanghai vs. 
>Barcelona when comparing identical clockspeeds. But of course the 
>increased clockspeed ist a big argument for Shanghai (or the same 
>clockspeed with less energy consumption). 
>
>And Shanghai has some more features like faster memory and HT3 in 
>some of the later revisions i hope...

Yes, I think HT3 *must* be. It was declared for Barcelona, but really 
is supported now AFAIK only for desktop chips.

Mikhail

>
>Jan

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