CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > General Forums > Hardware

i7-975 versus Xeon W5590

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   December 20, 2009, 03:26
Default i7-975 versus Xeon W5590
  #1
New Member
 
Join Date: Dec 2009
Posts: 2
Rep Power: 0
DonMgt is on a distinguished road
We plan to do some pretty intensive CFD work in the next few months. Currently, we use an Intel dual core two processor machine. We just bought an i7-975 machine for a different application so we can benchmark it against our current system, but even this machine will not be as fast as we would like. The [8-Way] Six-Core AMD Opteron 8435 looks like the speed increase that we would like but the Fluent license of paying for every core/processor makes some of the AMD processors look really expensive to me. We may just lease CFD/processor time from our local University but I’d rather put the money into buying hardware we keep if I can. So, after that long introduction;
I’d like to know if someone has put the Intel Xeon W5590 against an i7-975 in Fluent for runs that take several hours. I can’t find benchmarks on the W5590 that also show the i7-975 to get a good feel for how much faster it should be. We will be trying overclocking to squeeze out the top performance we can.
I’d also like to know if anyone has a feel for what impact using 1333 RAM instead of 1066 RAM will be?
DonMgt is offline   Reply With Quote

Old   February 9, 2010, 06:29
Default
  #2
Member
 
Michiel
Join Date: Jul 2009
Location: The Netherlands
Posts: 42
Rep Power: 16
Michiel is on a distinguished road
According to this benchmark overview:

http://www.cpubenchmark.net/high_end_cpus.html

... It doesn't make a big difference.


If you want to overclock your CPU, you can get good results with a Intel W3540 according to this overview:

http://www.cpubenchmark.net/overclocked_cpus.html
Michiel is offline   Reply With Quote

Old   February 12, 2010, 14:45
Default
  #3
New Member
 
Susan
Join Date: Oct 2009
Posts: 26
Rep Power: 16
hvem10 is on a distinguished road
[QUOTE=Michiel;245458]According to this benchmark overview:

http://www.cpubenchmark.net/high_end_cpus.html

... It doesn't make a big difference.

A very important issue, which is not just related to the speed of a single node, is how well they parallise. The i7 might be comparable when using up to 2 or 3 nodes (of the 4) but I would like to know the performance between the i7 and w5590 when running CFD in parallel and using all 4 nodes. I am not sure, but guess the w5590 will out perform the i7
hvem10 is offline   Reply With Quote

Old   February 13, 2010, 19:59
Default
  #4
New Member
 
Join Date: Dec 2009
Posts: 2
Rep Power: 0
DonMgt is on a distinguished road
We decided to buy a dual processor W5590 machine for the CFD work we are doing. We just got it in and our initial assessments show it's pretty much what we expected from the benchmarks. We also have a i7-975 machine used for another application. We have one task that uses all four cores pretty evenly so on the 975, in a CFD application I'd expect about the same performance.

I'm curious if anyone has some real world comparisons between the machine we bought dual processor W5590, and the "typical" multi-processor "super computers" being used by some of the universities selling CFD time. I haven't get very crisp answers on what type of processors they are using so it's been difficult to estimate cost of doing this work inhouse with our own machine our outsourcing it.
DonMgt is offline   Reply With Quote

Old   February 14, 2010, 12:03
Default
  #5
New Member
 
Susan
Join Date: Oct 2009
Posts: 26
Rep Power: 16
hvem10 is on a distinguished road
There is a comparison on http://www.tomshardware.co.uk/forum/255746-10-scaling-core-poor-worse-q6600

and there is the scaling for the Core I7 not very good.
For four threads, Core i7 920@3.55G is slower than Q6600@2.4G!
The scaling of Xeon E5410 is the best.
hvem10 is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
AMD Opteron 2389 vs. Xeon W5580 soni7007 Hardware 1 May 3, 2009 18:42
Xeon and Opteron architecture differences johndeas Main CFD Forum 4 December 10, 2008 09:05
Properties of air versus temperature AND pressure Vincent Main CFD Forum 5 July 28, 2008 07:28
Core 2 Duo vc. Dual Core Xeon 3060 Jan Main CFD Forum 6 February 20, 2007 07:21
variable versus time Cesare CFX 1 September 27, 2004 12:00


All times are GMT -4. The time now is 00:18.