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Proper CPU stress test?

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post #11 of 12 (permalink) Old 09-05-2019, 07:08 AM
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For initial tweaking I use statuscore's built in stress test for 5 minutes:
http://www.dannotech.com/statuscore/
After that passes, I use blender (BMW scene for old CPU, Barbershop for newer) and set up the render to be a large enough resolution and sample count such that it definitely won't finish within 12 hours, then I let it run. Usually it'll crash from blender the first time so a little tweaking is done until it can run for a solid hour then I let it run over night. If it hasn't crashed by the next day I'll let the blender render continue while I use the PC to browse the internet and stuff. With this process it can take a few days to get something fully stable, but blender is one of the most intense real-world applications and makes extensive use of AVX and memory while not setting your CPU on fire.

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Last edited by qwertymac93; 09-05-2019 at 08:01 AM.
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post #12 of 12 (permalink) Old 09-07-2019, 12:51 PM
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Quote: Originally Posted by Diablosbud View Post
I think the latest Prime95 is still the way to go. I do around 6 hours on Small FFTs and 6 hours on Blend (with custom near-max RAM usage) before I feel 99% sure it's stable.

I don't mind taking a bit of a hit in clock speed, if it's rock solid.

But I program, run virtual machines and run BOINC. So I don't want errors or problems with those. People who only game on their machine might feel otherwise.

I wrote my own, that way I know what the CPU is actually doing and where the problem is (ram vs cpu). Since you program, code up a multi threaded program. Key is locking threads to specific cores, then decide if you want a memory or cache based data set. The remainder is creating a reporting method to know if there is improvement between overclocks.
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