choose AMD CPU of workstation for ANSYS fluent

jonswap · October 28, 2021, 10:52

Hello,
I have experienced in ANSYS fluent on my workstation with Intel i9-10940x CPU (14 cores and 28 threads) for 1 year.
Now, my students hesitate to choose which CPU for new workstation.
In this picture, it seems that AMD Ryzen 9 5950x (16 cores and 32 threads) is the best CPU in this ranking list (for "one" single core test ?).
I want to know how about "AMD Ryzen Threadripper 3960X" which has more cores (24 cores and 48 threads). Does it get better efficiency than AMD Ryzen 9 5950x ?
But to my knowledge now, when I choose higher number of processes (ex: 48 threads) than actual number of cores (ex: 24) in parallel setting, it seems efficiency doesn't speed up than choosing lower number of processes (like lower than actual number of cores, ex: 12, 20, 24)

.
So, have anyone can give suggestion or knowledge for me ?
Thanks!

flotus1 · October 28, 2021, 15:50

General recommendations for CFD hardware [WIP]

Please try to answer the questions in paragraph "0"
And feel free to read the rest of that post, it should answer most of the questions you brought up.

October 28, 2021, 10:52	choose AMD CPU of workstation for ANSYS fluent	#1
jonswap New Member jonswap Join Date: Jul 2020 Posts: 2 Rep Power: 0	Hello, I have experienced in ANSYS fluent on my workstation with Intel i9-10940x CPU (14 cores and 28 threads) for 1 year. Now, my students hesitate to choose which CPU for new workstation. In this picture, it seems that AMD Ryzen 9 5950x (16 cores and 32 threads) is the best CPU in this ranking list (for "one" single core test ?). I want to know how about "AMD Ryzen Threadripper 3960X" which has more cores (24 cores and 48 threads). Does it get better efficiency than AMD Ryzen 9 5950x ? But to my knowledge now, when I choose higher number of processes (ex: 48 threads) than actual number of cores (ex: 24) in parallel setting, it seems efficiency doesn't speed up than choosing lower number of processes (like lower than actual number of cores, ex: 12, 20, 24). So, have anyone can give suggestion or knowledge for me ? Thanks!

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October 28, 2021, 15:50		#2
flotus1 Super Moderator Alex Join Date: Jun 2012 Location: Germany Posts: 3,308 Rep Power: 44	General recommendations for CFD hardware [WIP] Please try to answer the questions in paragraph "0" And feel free to read the rest of that post, it should answer most of the questions you brought up.