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<font style="font-family: tahoma; font-size: 10pt;"><div style="font-family:
tahoma; font-size: 10pt;">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)</div><div> </div><div>Michael<br> </div></font>
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-----Original Message-----<br>
From: "Q Z" <zmqw2k@gmail.com><br>
To: "A Mailing list for WIEN2k users"
<wien@zeus.theochem.tuwien.ac.at><br>
Date: Mon, 22 Oct 2007 14:22:36 +0800<br>
Subject: Re: [Wien] 2 XEON 5355 or 4 XEON 5150?<br>
<br>
<div>Thanks for you reply. </div>
<div>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? <br><br>
ZM</div>
<div> </div>
<div><span class="gmail_quote">2007/10/19, Matyáš Novák <<a
href="mailto:novakmat@fzu.cz">novakmat@fzu.cz</a>>:</span>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204,
204); margin: 0px 0px 0px 0.8ex; padding-left: 1ex;">Q Z napsal(a):<br>
><br>> Dear All,<br>> We plan to buy a new
computer for Wien2k calcualtion. There are
<br>> two choices, one is use 2 quad core CPU (Intel XEON 5355),the other
is<br>> use 4 dual core CPU (XEON 5150). Which one is better for
parallel<br>> calculation? Somebody told me that the speed is
slow down if runing
<br>> a job in parallel using the 8 cores of 2 XEON 5355. Is
it right?<br>> Thanks in advance.<br>><br>Dear QZ,<br>the intel xeon
scale pretty good up to four cores on one FSB - so if you<br>can choose
bettwen two computers with 2x2cores and one with 2x4, the
<br>first choice is imho better.<br>Matyas Novak<br>
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