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June 2, 2012, 15:58 |
need opinion Workstation 2x Xeon e5 e2690 ?
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#1 |
New Member
mirion
Join Date: Dec 2010
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Hello, I would like to know your opinion. I can buy a used dual 2x e5 e2660 Xeon workstation for CFD purpose, however is possible to upgreade for better e5 e2690 processors. My question is could you know more or less a performance gain between dual e2660 vs e2690? It is important for me because upgrade could costs additionally around 35-45% of e2660 workstation end price.
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June 2, 2012, 17:52 |
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#2 |
Senior Member
Charles
Join Date: Apr 2009
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It would be best if you could actually test it with the software that you are going to run, but of course that is very difficult to arrange. In the absence of such information, you can look at the SpecFPrate (www.spec.org) numbers, which are about 440 for the 2660 and 490 for the 2690. So the difference looks like it could on average be about 11%, which scarcely justifies the difference in price. In more detail, the times for the leslie3d test (a research CFD code) are 1106 and 1080 respectively, which is far too small a difference to justify the expensive upgrade. Others on this forum have emphasised the extent to which CFD performance tends to be determined by memory bandwidth, and this seems to be an example of that characteristic. So if you have the option of tweaking the configuration of this workstation, perhaps you should make sure that you are getting the fastest available memory rather than the faster CPU's.
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June 4, 2012, 17:39 |
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#3 |
Member
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The E5 series is still pretty new how are you finding a used dual core system so soon?
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June 5, 2012, 08:32 |
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#4 | |
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mirion
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Quote:
Sorry for another question, maybe is trivial but is the dual xeon e2660 system faster as 2 nodes single Intel 3960X workstation? Last edited by laxwendrofzx9r; June 5, 2012 at 17:27. |
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June 5, 2012, 08:33 |
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#5 |
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mirion
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June 5, 2012, 09:01 |
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#6 | |
Senior Member
Charles
Join Date: Apr 2009
Posts: 185
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Quote:
It gets tricky when you bring price into the equation. You may very well be able to buy three or more of the fast single socket machines for the price of a single dual socket workstation, in which case you can probably expect the small cluster to be quicker, if somewhat more of a hassle to deal with. If you are interested in quite a novel approach, take a look at this system which packs several motherboards into a single chassis: http://limulus.basement-supercomputing.com/ |
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June 5, 2012, 09:04 |
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#7 |
Senior Member
Joern Beilke
Join Date: Mar 2009
Location: Dresden
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