[Wien] 2 XEON 5355 or 4 XEON 5150?

[Michael Gurnett]

If you check the benchmarks it seems that the AMDs are slower than the intel 
based systems (Peter does mention the possible reason for this)

Michael


-----Original Message-----

From: "Q Z" <zmqw2k at gmail.com>

To: "A Mailing list for WIEN2k users" <wien at zeus.theochem.tuwien.ac.at>

Date: Mon, 22 Oct 2007 14:22:36 +0800

Subject: Re: [Wien] 2 XEON 5355 or 4 XEON 5150?




Thanks for you reply.

Do you think the scale of 2X4cores using two AMD quad core CPU(opteron 2350) 
is better than that of 2X4 cores using two Xeon 5355? 

ZM



2007/10/19, Matyáš Novák <novakmat at fzu.cz [mailto:novakmat at fzu.cz]>:

Q Z napsal(a):
>
> Dear All,
>     We plan to buy a new computer for Wien2k calcualtion. There are

> two choices, one is use 2 quad core CPU (Intel XEON 5355),the other is
> use 4 dual core CPU (XEON 5150). Which one is better for parallel
> calculation?  Somebody told me that the speed is slow down  if runing

> a job in parallel using the 8 cores of  2 XEON 5355. Is it right?
> Thanks in advance.
>
Dear QZ,
the intel xeon scale pretty good up to four cores on one FSB - so if you
can choose bettwen two computers with 2x2cores and one with 2x4, the

first choice is imho better.
Matyas Novak
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