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July 5, 2012, 00:54 |
Xeon E5606 vs. Xeon E5645
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#1 |
New Member
Join Date: Oct 2010
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I'm working on Transient RSM model (including DPM) with 1.3 million Hex cells. I may switch on to LES in the latter stages. I've the following options:
INTEL XEON E-5606 CPU ( 2.6 GHz ) MOTHERBOARD S-5500 BCR INTEL 4x4GB DDR III RAM ECC KINGSTON INTEL XEON E-5645 CPU ( 2.6 GHz ) 6 CORE MOTHERBOARD S-5520 SCR INTEL 2x8GB DDR III RAM ECC REGD KINGSTON Is this configuration good enough to run my simulations smoothly? Which graphics card shall I go for? I think Intel® Xeon® Processor E5-2687W will be out of my range, otherwise it would have been a good option ! Suggestions, if any, will be appreciated. |
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July 5, 2012, 04:27 |
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#2 |
Senior Member
Charles
Join Date: Apr 2009
Posts: 185
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Either of those configurations will run your simulations "smoothly". However, you would sacrifice performance due to the older type of memory configuration. The motherboard specifications indicate that both boards will only support up to 1333 MHz memory, whereas the more recent designs can use 1600 MHz memory. Even more important is the number of memory lanes. The S-5500 BCR board has only 4 memory lanes, and the S-5520 SCR has 6 lanes to feed the two sockets. The current dual-CPU boards for either Intel E5-* or AMD G34 sockets all have 8 lanes for 1600 MHz memory to feed two sockets. If your budget is limited, consider sacrificing CPU clock speed in favour of the faster memory sub-systems of the more recent designs. And you also need to make sure that you actually install the memory correctly, so that you can get the full benefit of the parallel memory lanes. Putting less than 6 memory modules into the S-5520 board would slow it down quite dramatically.
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July 5, 2012, 09:34 |
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#3 |
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Thanx CapSizer, I got it. Few people are suggesting me to go with AMD processor, but as far as i know, the latest amd processor has lesser "per core" performance than even intel i5 processor. Is this true? Within this budget, is there any other combination with atleast 8 cores ? I need some help coz I'm not very sound in this field and I've to purchase one soon !
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July 5, 2012, 10:26 |
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#4 | |
Senior Member
Charles
Join Date: Apr 2009
Posts: 185
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Quote:
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July 6, 2012, 03:04 |
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#5 |
New Member
Join Date: Oct 2010
Posts: 20
Rep Power: 15 |
Hi CapSizer, thanks once again for your valuable suggestions. After hearing from you, I'm refining my search. Now i think i shall expand my budget to get something better. If I go with two "INTEL XEON E-5606 CPU", which motherboard shall I opt, which graphics card shall I look for, and what should be the RAM distribution pattern (say 16 GB RAM) for best performance? If you can suggest some good configs that may further help me out.
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July 6, 2012, 04:31 |
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#6 |
Senior Member
Charles
Join Date: Apr 2009
Posts: 185
Rep Power: 18 |
Well, the problem with the E5606 CPU is that it is inexpensive because it is last year's technology. A board that supports them is the ASUS Z8NA-D6, which uses the handy standard ATX form factor, so it is easy and inexpensive to assemble a system. Just remember that with this setup you only get 6 channels of 1333 MHz RAM. If performance is really crucial, you want a system that will give you 8 channels of 1600 MHz RAM. With the E5606, you need to populate 6 channels of RAM, so you either need to settle for 12 GB, or go for 24 GB.
Don't underestimate the effect of Moore's law (or observation, if you prefer). Computer power doubles more or less every 18 months, and the E5606 is now 18 months old. If you can, rather buy the latest. My suggestion would be to go for the cheapest current model Xeon (E5-2620) or Opteron (6212) combined with the appropriate 8-channel 1600 MHz motherboards. For the graphics card, it is a question of how much power you really need. If you are only post-processing fairly small CFD models (say less than 2 million cells), you don't need anything special, so you can save money on it. If you want more help, send me a PM. |
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