CPU selection (E5-2650) for CFD simulation

songxguan · October 19, 2012, 11:27

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

kyle · October 22, 2012, 13:03

If you are using an unstructured mesh, then memory bandwidth is usually more important than CPU clockspeed.

evcelica · October 23, 2012, 17:09

What software will you be using?
You can probably ditch the ECC memory to save money, just go with desktop memory.

October 19, 2012, 11:27	CPU selection (E5-2650) for CFD simulation	#1
songxguan New Member Xue-Guan Song Join Date: Mar 2009 Location: Busan, Korea Posts: 14 Rep Power: 17	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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October 22, 2012, 13:03		#2
kyle Senior Member Join Date: Mar 2009 Location: Austin, TX Posts: 160 Rep Power: 18	If you are using an unstructured mesh, then memory bandwidth is usually more important than CPU clockspeed.

October 23, 2012, 17:09		#3
evcelica Senior Member Erik Join Date: Feb 2011 Location: Earth (Land portion) Posts: 1,188 Rep Power: 23	What software will you be using? You can probably ditch the ECC memory to save money, just go with desktop memory.