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CPU selection (E5-2650) for CFD simulation

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Old   October 19, 2012, 10:27
Default CPU selection (E5-2650) for CFD simulation
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Xue-Guan Song
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Hi guys,

I'm trying to select a workstation for my CFD simulation. Someone gave me a list of HP Z820 workstation, you can see below, but the price is soooo expensive.
LJ452AV
HP Z820 Workstation
4,453.92
4,453.92
5,344.70
QG255AV
HP Single Unit Packaging
QG197AV
HP Z820 1125W 90 Efficient Chassis
QG517AV#ABU
Microsoft Windows 7 Professional Edition 64bit OS UK
QE249AV
Windows 7 64 Bit Factory Image Recovery
A2A42AV
Intel Xeon E5-2687W 3.10Ghz 20MB 1600 8C 1st CPU
A2A56AV
Intel Xeon E5-2687W 3.10Ghz 20MB 1600 8C 2nd CPU
A0V52AV
32GB DDR3-1600 (8x4GB) 2CPU Registered RAM
QG214AV
NVIDIA Quadro 2000 1GB Graphics
QJ687AV
1TB 7200 RPM SATA 1st Hard Drive
QG096AV#ABU
HP USB Standard Keyboard
QG247AV
HP USB Optical Scroll Mouse
QG250AV
16X SuperMulti DVDRW SATA 1st ODD
B2L51AV#ABB
HP 3/3/3 Warranty EURO
QG288AV
HP Liquid Cooling Solution
LJ456AV#ABU
HP Z820 Localization Kit
AY110AV
HP Simple Asset Tagging Service
YQ205AV
HP YQ205AV Basic UNIT Asset Tag (SN&MAC)
YQ206AV
HP YQ206AV Basic BOX Asset Tag (SN&MAC)
LW490AA#ABU
HP CPQ LA2206xc 21.5-In LED LCD
UE342E
HP 3 year Next Business Day Onsite plus Defective Media Retention Workstation


Since the high price, I want to change to CPU to E5-2650. but the frequency of E5-2650 is just 2.0GHz, I'm not sure if this is fast enough for CFD simulation. However, in terms of cpubenchmark, http://www.cpubenchmark.net/high_end_cpus.html, this one is also OK. So, could you give me some suggestion about this workstation?
Should I change some components like RAM or Graphic card?

Thanks a lot!
XG
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Old   October 22, 2012, 12:03
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If you are using an unstructured mesh, then memory bandwidth is usually more important than CPU clockspeed.
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Old   October 23, 2012, 16:09
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Erik
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What software will you be using?
You can probably ditch the ECC memory to save money, just go with desktop memory.
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