How to Stress Test CPU with OCCT | Single and Multicore methods | Stability Test

How to stress test your CPU to make sure it is stable after overclocking or undervolting. Safe and excellent way to test for both single and multicore performance.

Chapters:
0:00 Intro
1:25 Multicore Core Test
5:00 Single Core Test
9:23 Conclusion

[Pabula]

Incredible this OCCT, with 0.1V undervolt on my 13900K was stable on AIDA64 / Prime95 / CB23.3, but in less than 5 min i got errors with OCCT. Thanks for sharing the video.

[joshc]

This helped me with stability. Subscribed!

[JMUDoc]

IMO, Curve Optimization on Ryzen 5000 should be done ONLY this way - an overclock/undervolt might be stable under all-core load, but crash during gaming, or even idle. It's because the all-core load uses a LOWER frequency.
My CO procedure is to undervolt one core at a time and set OCCT to flip between that core and a "default" core - not only does this hit one core as hard as possible, it simulates the loading and unloading of that core that occurs during normal Windows operation.

[MikaTarkela]

Thanks for making this video. I have the same processor and I just changed my cooler to a liquid aio cooler and I'm thinking of undervolting.

[Bigga_Velz]

Can u do a updated version...occt has updated and sum of its features has changed

[laitsuZ]

I'm not very tech savvy. The latest version (12.1.10) looks different. What settings do I set exactly for that single core testing? It's a little simpler. Under Thread settings there are options cycle through and custom. I'm using a 7800x3d if that matters.

[TRPLE_]

Ryzen 7 5700X on a MSI X570S Tomahawk Max motherboard with -30 curve optimiser:
15 minute multicore - Pass
45 minute (5 minute cycles) single core - Pass
CPU temp maxed out at 65.6C.

[OlettaLiano]

Thanks. I found this video very helpful.

[SouthDH]

Ryzen 9 5900x
x570 Asus Pro
4 GHz, 1.05 Vol
MultiCore Test, 1 Hour Passed
Single Core 5 Minute All Core Cycle 1 Hour Passed
53C Peak Temperature

[Andrei_M_Af]

7800x3d i found that values on soem cores changes outcome of other cores, this made things severly complicated, i can set soem to -11 and soem to -35 and it's stable but if i set the -35 to 20 i can run the one who use to fail above 11 to something liek -15...

[Agent__]

I might have missed this, but is better to run this and go do something else or can you still use the PC while it's running the test?

[hernanp]

Could you please help me? I have the following problem, no errors in memtest, no errors in AIDA 64 after 3 hours test FPU, the problem is only in OCCT with thousands of WHEA ERRORS. Im using a i9 13900kf stock, without OC, and 6800mhz in rams gskill tridentz, i have tried to disable XMP profile but the problem continues

[rickgear]

WHat about WHEA errors? I got a few of those running the small test, but not the large. ANything to worry about? How to fix? I have a 7800X3D

[SahinnTT]

Hello when I start Power Test whit OCCT after 2 minutes my monitor goes off but my PC Fans loud so crazy and i think go full fan mode whats my problem can you help me please i cant figure whats the problem

[WinCheesily]

My test pulls zero errors if I set the instruction set to AVX2 but if I set to auto it throws core errors. Why would this happen?

[mishigen]

Hi. Do anybody knows limit when OC ryzen 5 5600 /B550m-pro ? what is the limit on clock?

[exquisitemarkk]

i found cpu error found on physical core 6 what is the meaning of these error?

[Sams]

so I have what appears to be a very stable system.... running i9 13900KS with AI OC... I also have 128GB of RAM running with XMP at 5600MT.. The computer is stable.. But I get errors with this app for the stress tests for both CPU and Memory... what gives? Is this test truly accurate? or are some of these errors not relevant to the stable operation of a PC?

[helpful]

How do I set this to run 50% cpu so I can do some cooler testing?

[thekids_callmeboss]

Cpu 5700x
Single core testing in occt.(per core)
I have a 6 core 12 threads cpu.

In the new occt settings there is now the option to select threads per core.
What do I put there?