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

A cheap CFD Workstation build with chineeese boards

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

Like Tree1Likes
  • 1 Post By wkernkamp

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 22, 2022, 17:12
Default A cheap CFD Workstation build with chineeese boards
  #1
Member
 
Eduardo Firvida
Join Date: Dec 2010
Posts: 48
Rep Power: 14
efirvida is on a distinguished road
Hi!

After reading this thread I'm thinking of building a workstation for CFD based on Xeon E5 platform, just for meshing and testing cases before moving it to HPC. My budget is around $700.
As at the moment I don't want to post-process anything I would avoid a good GPU and put all the budget on the performance.

Seen prices in Alliexpress and eBay for used processors I seed that I can get good configurations as:

E5 2773-v3 -> $47.00
to
E5-2696v3 -> $126.00
and a lot of other offers in between.

Then I fond a dual socket 4 chanel per socket motherboards between 170-200
HUANANZHI X99 F8D X99 (DDR4)
HUANANZHI-X99 T8D X99 (DDR3)

With this I can setup a configurations with 2 xens and 8 channels of ram from nearly $300
using the E5 2773-v3, And all the rest of the money is for 8 modules of ram, heat disipators, PSU, and cheapest GPU (this board doesn't have one), and HDD.

So my question is, the price difference between DDR3 and DDR4 is not to much, but some peoples says that DDR3 are better.

This configuration worth the money in 2022, or there are better choices arownd there.
efirvida is offline   Reply With Quote

Old   July 22, 2022, 19:05
Default
  #2
Senior Member
 
Will Kernkamp
Join Date: Jun 2014
Posts: 170
Rep Power: 10
wkernkamp is on a distinguished road
Quote:
Originally Posted by efirvida View Post
Hi!
So my question is, the price difference between DDR3 and DDR4 is not to much, but some peoples says that DDR3 are better.

This configuration worth the money in 2022, or there are better choices arownd there.
Q1. You should go for DDR4-2400, to maximize the bandwidth. Most v3 and v4 xeons require DDR4. Note that v3 xeons go up to DDR4-2133, so that is slower. Better get a pair of E5-2680 v4 or E5-2683 v4. That should get you the best possible performance and these processors are now cheap as well.


Q2. There is a youtube channel https://www.youtube.com/c/Miyconst that does reviews on the chinese xeon motherboards. This is important, because many of these boards have something not working that you were perhaps going to rely on. First, search for the one you are thinking of buying. In addition, he makes recommendations from time to time. Look for X99 and Dual. The focus is on gaming, but he does a thorough job. Make sure the board you are getting supports DDR4-2400 in 8 channel configuration and v4 processors.



Xeon v3 Turboboost Unlock: On xeon v3 processors, it is possible to do turboboost unlock. This will allow the processors to do all core turboboost to the highest frequency. For CFD that is not interesting, because you will be limited by memory, cache and thermal throttling. In case you want to use it anyway, Miyconst has a package to do the turboboost unlock. Usually, the turboboost unlock is one of the features he tests on each motherboard.
efirvida likes this.
wkernkamp is offline   Reply With Quote

Old   July 22, 2022, 19:24
Default
  #3
Member
 
Eduardo Firvida
Join Date: Dec 2010
Posts: 48
Rep Power: 14
efirvida is on a distinguished road
Quote:
Originally Posted by wkernkamp View Post
Xeon v3 Turboboost Unlock: On xeon v3 processors, it is possible to do turboboost unlock. This will allow the processors to do all core turboboost to the highest frequency. For CFD that is not interesting, because you will be limited by memory, cache and thermal throttling. In case you want to use it anyway, Miyconst has a package to do the turboboost unlock. Usually, the turboboost unlock is one of the features he tests on each motherboard.

Thanks for your reply, I have seen Miyconst's youtube channel, which is excellent, following it, is where I decided on the HUANANZHI brand on dual configurations, considering the VRAM dissipation, build quality and the 8 channels of RAM.

So as I understand, It will be better always DDR4 over de DDR3, considering V4 to get the maximum memory bandwidth, also I know that the V4 has more memory cache. But you point to something to me.... The Miyconst's tips are always for gaming, but that's not my use case. So I turbo boost will not improve anything? I don't need it, it will only cause overheating.

But I'm wondering if someone uses this type of machine under CFD hours and ours of workload. And if it worth the money
efirvida is offline   Reply With Quote

Old   July 22, 2022, 20:15
Default
  #4
Senior Member
 
Will Kernkamp
Join Date: Jun 2014
Posts: 170
Rep Power: 10
wkernkamp is on a distinguished road
Quote:
Originally Posted by efirvida View Post
Thanks for your reply, I have seen Miyconst's youtube channel, which is excellent, following it, is where I decided on the HUANANZHI brand on dual configurations, considering the VRAM dissipation, build quality and the 8 channels of RAM.

But I'm wondering if someone uses this type of machine under CFD hours and ours of workload. And if it worth the money

For lengthy runs, the xeons are always fine. The motherboard VRAM is also important. It looks like you have selected the right motherboard. For a xeon v4 workstation, you should be at the low cost point. You should get the largest quietest cpu fans/coolers you can find and will fit. If you do, the workstation can be very quiet even when running the CFD.


An interesting alternative is to use a single modern CPU, dual channel with very high DDR5 memory clock:
See
Quote:
Originally Posted by ErikAdr View Post
In total Dkr 7.533 which is € 1005 or $ 1147 (prices are excl V.A.T)
The best openfoam benchmark speed he got was107.09 seconds. If you set up your workstation properly, you should get about 70 seconds.



You could go lower cost by buying an old server. For example $330 + tax:
https://www.ebay.com/itm/18548165194...YAAOSwvjNiA60G


This one has two 10 core cpus. Should be pretty good already maybe 80 seconds on the benchmark. There will be an upgrade path to v4 and endurance isn't a problem. Nice feature: you can install up to 3 Compute GPUs. Warning: sounds like a jet engine when you run the CFD.
wkernkamp is offline   Reply With Quote

Old   August 13, 2022, 15:43
Default
  #5
Senior Member
 
Join Date: Jun 2011
Posts: 132
Rep Power: 13
CFDfan is on a distinguished road
Quote:
Originally Posted by efirvida View Post
Hi!

After reading this thread I'm thinking of building a workstation for CFD based on Xeon E5 platform, just for meshing and testing cases before moving it to HPC. My budget is around $700.
As at the moment I don't want to post-process anything I would avoid a good GPU and put all the budget on the performance.

Seen prices in Alliexpress and eBay for used processors I seed that I can get good configurations as:

E5 2773-v3 -> $47.00
to
E5-2696v3 -> $126.00
and a lot of other offers in between.

Then I fond a dual socket 4 chanel per socket motherboards between 170-200
HUANANZHI X99 F8D X99 (DDR4)
HUANANZHI-X99 T8D X99 (DDR3)

With this I can setup a configurations with 2 xens and 8 channels of ram from nearly $300
using the E5 2773-v3, And all the rest of the money is for 8 modules of ram, heat disipators, PSU, and cheapest GPU (this board doesn't have one), and HDD.

So my question is, the price difference between DDR3 and DDR4 is not to much, but some peoples says that DDR3 are better.

This configuration worth the money in 2022, or there are better choices arownd there.
Your selection is a very, very good value for money. The only limitation I see are the 4 memory channels (instead of 8). I would go with ddr4
CFDfan is offline   Reply With Quote

Old   August 16, 2022, 07:36
Default
  #6
New Member
 
Robert
Join Date: Aug 2022
Posts: 1
Rep Power: 0
Robert52 is on a distinguished road
Hello,

I think it is also better to go for DDR4.
_____________
https://botnation.ai/en/

Last edited by Robert52; August 23, 2022 at 12:13.
Robert52 is offline   Reply With Quote

Old   August 18, 2022, 01:08
Default
  #7
Member
 
Yan
Join Date: Dec 2013
Location: Milano
Posts: 37
Rep Power: 10
aparangement is on a distinguished road
Send a message via Skype™ to aparangement
Never heard of "HUANANZHI" in China.

That been said, I do believe almost all the all the mojor motherboard companies are based in China..

Quote:
Originally Posted by efirvida View Post
Hi!

After reading this thread I'm thinking of building a workstation for CFD based on Xeon E5 platform, just for meshing and testing cases before moving it to HPC. My budget is around $700.
As at the moment I don't want to post-process anything I would avoid a good GPU and put all the budget on the performance.

Seen prices in Alliexpress and eBay for used processors I seed that I can get good configurations as:

E5 2773-v3 -> $47.00
to
E5-2696v3 -> $126.00
and a lot of other offers in between.

Then I fond a dual socket 4 chanel per socket motherboards between 170-200
HUANANZHI X99 F8D X99 (DDR4)
HUANANZHI-X99 T8D X99 (DDR3)

With this I can setup a configurations with 2 xens and 8 channels of ram from nearly $300
using the E5 2773-v3, And all the rest of the money is for 8 modules of ram, heat disipators, PSU, and cheapest GPU (this board doesn't have one), and HDD.

So my question is, the price difference between DDR3 and DDR4 is not to much, but some peoples says that DDR3 are better.

This configuration worth the money in 2022, or there are better choices arownd there.
aparangement is offline   Reply With Quote

Old   August 23, 2022, 00:42
Default
  #8
Senior Member
 
Join Date: Jun 2011
Posts: 132
Rep Power: 13
CFDfan is on a distinguished road
Quote:
Originally Posted by efirvida View Post
Hi!

After reading this thread I'm thinking of building a workstation for CFD based on Xeon E5 platform, just for meshing and testing cases before moving it to HPC. My budget is around $700.
As at the moment I don't want to post-process anything I would avoid a good GPU and put all the budget on the performance.

Seen prices in Alliexpress and eBay for used processors I seed that I can get good configurations as:

E5 2773-v3 -> $47.00
to
E5-2696v3 -> $126.00
and a lot of other offers in between.

Then I fond a dual socket 4 chanel per socket motherboards between 170-200
HUANANZHI X99 F8D X99 (DDR4)
HUANANZHI-X99 T8D X99 (DDR3)

With this I can setup a configurations with 2 xens and 8 channels of ram from nearly $300
using the E5 2773-v3, And all the rest of the money is for 8 modules of ram, heat disipators, PSU, and cheapest GPU (this board doesn't have one), and HDD.

So my question is, the price difference between DDR3 and DDR4 is not to much, but some peoples says that DDR3 are better.

This configuration worth the money in 2022, or there are better choices arownd there.
If you buy the system above would you please share your experience.
CFDfan 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
Help to buy a Workstation for CFD fedez91 Hardware 10 March 12, 2021 11:07
CFD workstation configuration calling for help 2 Freewill1 Hardware 6 July 8, 2020 22:17
Advice on PC build for CFD AnhDL Hardware 11 May 10, 2020 11:08
Home workstation for large memory demand CFD yutsumi Hardware 17 May 5, 2020 10:13
Build a Workstation, or run CFD in the Cloud TonyEng Hardware 0 August 7, 2015 13:48


All times are GMT -4. The time now is 18:48.