Request for updating the budget CPU recommendation (CFD applications)

Habib-CFD · January 6, 2023, 17:26

Hi, CFD fans!

I can't find any updated benchmarks based on newly released budget CPUs.

Currently, I am in doubt between 13600K and 12500 for an 1M-cells CFD problem (CentOS. 7). The IPC is almost same, I am curious about AVX-512 function that may still available in older bios of 6 series motherboard.

Is it really worth to pay double for a 13600K+DDR5-5200 configuration?
The higher clock or cache makes for example 20 percent uplift or not?

It looks the 12500 can completely feed at 6 cores by DDR4-3200 CL14 with out RAM bottleneck.

Also, I am looking for a reliable benchmark on Fluent or OpenFOAM W/ and W/O E cores, Please share your experience.

ezy_nerdist · January 9, 2023, 08:28

I think you should go with OpenFOAM. The rest looks perfect!

January 6, 2023, 17:26	Request for updating the budget CPU recommendation (CFD applications)	#1
Habib-CFD Member Join Date: Oct 2019 Posts: 63 Rep Power: 6	Hi, CFD fans! I can't find any updated benchmarks based on newly released budget CPUs. Currently, I am in doubt between 13600K and 12500 for an 1M-cells CFD problem (CentOS. 7). The IPC is almost same, I am curious about AVX-512 function that may still available in older bios of 6 series motherboard. Is it really worth to pay double for a 13600K+DDR5-5200 configuration? The higher clock or cache makes for example 20 percent uplift or not? It looks the 12500 can completely feed at 6 cores by DDR4-3200 CL14 with out RAM bottleneck. Also, I am looking for a reliable benchmark on Fluent or OpenFOAM W/ and W/O E cores, Please share your experience.

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January 9, 2023, 08:28		#2
ezy_nerdist New Member EJAZ Join Date: Jan 2023 Posts: 4 Rep Power: 3	I think you should go with OpenFOAM. The rest looks perfect!