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Desktop configuration for CFD purposes.

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Old   June 2, 2019, 09:34
Red face Desktop configuration for CFD purposes.
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Abhishek
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This is the first time I am building a PC for CFD simulations.
I have currently settled on the following build-

PROC : AMD Ryzen Threadripper 1920x
MOBO : AsRock X399 Taichi
RAM : G.Skill TridentZ 4x8GB
SSD : Samsung 970 Evo Plus

I have some doubts regarding the processor. How does it compare to some Intel processors like 7800x and 7820x? How does it compare to TR 2920x? Is it worth spending extra on 2920x? Are there any Xeons I should be looking at in my price range?

I will mainly be using Ansys Fluent and some ICEM with mesh sizes ranging from 2-10mil, both steady and transient simulations.

I'm currently using a laptop with i7-4720HQ, and 8GB RAM for my simulations. Should I expect a substantial performance increase?

Recommendations on any other components would be appreciated.

Thank you!
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Old   June 2, 2019, 12:56
Default have a look at AMD Epyc processors
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Will Kernkamp
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For CFD calculations the number of memory channels is important. The Epyc's have eight. In the hardware forum, you can see that the 16 core Epycs do very well: i.e. the 7301 and 7351.
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Old   June 2, 2019, 13:05
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But those are out of my price range.
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Old   June 2, 2019, 15:54
Default Buy used on ebay?
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Will Kernkamp
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Maybe second hand SP3 Epyc to get started and upgrade later on $389?
https://www.ebay.com/itm/AMD-EPYC-72...kAAOSwJOJcQfLV

Get a dual socket motherboard so that you can end up with two 16 core epyc's $450.
https://www.ebay.com/itm/Supermicro-...QAAOSwU2tc8HMs
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