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Stress testing the 13900K CPU?

SmartOne_2000
New Contributor I
3,151 Views

Hi:

 

I'm under-volting my CPU without affecting its performance by using various stress test programs to reduce its power draw from ~350W to now about ~290W.

 

1. I run XTU's stress tests for 8 hours (overnight), and my undervolt seems stable.

2. I run the Intel Processor Diagnostic Tool utility, which passes all the tests.

3. I run Cinebench R23 30-minute stability test, and it passes just fine.

4. I run OCCT's medium and large datasets (Extreme Option), which also passes.

5. I run OCCT small dataset or Prime95's small FFT where all data fits in cache and CPU heats up to > 100C quickly, and fails or locks up my system within seconds. All other prime95 tests pass fine.

 

Do I need to retune my undervolt to pass the failing tests, or are XTU's / OCCT medium-large dataset tests sufficient to prove to me that I have a stable system? Are XTU's tests rigorous enough to certify a system as stable or unstable? How long should they run, if 8 hours is not enough.

I'm not a video gamer but I run engineering and scientific software packages.

 

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9 Replies
Steven_Intel
Moderator
3,122 Views

Hello SmartOne_2000,


Thank you for posting on the Intel® communities.


I will go ahead and research about this. As soon as I have an update, I will get back to you.


Best regards,


Steven G.

Intel Customer Support Technician.


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SmartOne_2000
New Contributor I
3,104 Views

By the way, I can't modify the V/F values in the "Per Point Voltage Offset" tab. They are all greyed out. How can I modify them?

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Steven_Intel
Moderator
3,056 Views

Hello SmartOne_2000,


Many thanks for your patience.


Please consider that we do not support undervolting/overclocking since this could damage the processor and/or affect its performance. Also, we do not validate tests from third party applications, therefore we cannot confirm those tests are sufficient for the processor.


We can definitely validate that if XTU's and IPDT tests passed, that should be enough to prove the system is stable and 8 hours of that testing is definitely a good measure.


Take a look at the following article regarding Advanced Tuning Settings are Grayed Out on Intel® XTU with Intel® Core™ Processors K- and X-series (https://www.intel.com/content/www/us/en/support/articles/000090690.html)


Let me know if you have any concern.


Best regards,


Steven G.

Intel Customer Support Technician.


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SmartOne_2000
New Contributor I
3,049 Views

Thanks for the advice but the solution given in the app note you alluded to does not work. I have the latest windows updates, BIOS and latest everything.

 

Do you have an XTU manual that describes every feature listed in the XTU application?

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Steven_Intel
Moderator
3,028 Views

Thank you for your response.


While we do not have exactly what you are requesting, you can check the following two articles that could help you further with the application:


A Guide to Overclocking with Intel® Extreme Tuning Utility (Intel® XTU): https://www.intel.com/content/www/us/en/gaming/resources/overclocking-xtu-guide.html


How to Overclock Your Unlocked Intel® Core™ Processor: https://www.intel.com/content/www/us/en/gaming/resources/how-to-overclock.html


Best regards,


Steven G.

Intel Customer Support Technician.


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SmartOne_2000
New Contributor I
3,019 Views

Thank you for the resources. I need to know if the AVX2 multiplier offset also applies to AVX instructions.

If I change my AVX2 multiplier from 55 to 50, does the same multiplier apply to AVX instructions?

Do the AVX/AVX2 instructions use the same V/F curves?

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DeividA_Intel
Employee
2,987 Views

Hello SmartOne_2000, 



Thanks for your response. I understand that you have further questions related to the Intel® Extreme Tuning Utility (Intel® XTU) options and settings.


Even though we do not advise or provided recommendations related to how to overclock, I will try to confirm these details. However, bear in mind that the motherboard manufacturer can help you further if you want to overclock or change any setting that can affect the frequency or voltage of your unit.



Best regards, 

Deivid A.  

Intel Customer Support Technician 


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DeividA_Intel
Employee
2,974 Views

Hello SmartOne_2000,  

  


Thank you for posting on the Intel® communities.   

  


I could see that we have created an internal case that is currently under investigation by higher levels, please kindly refer to that case for more updates on this behavior.   


In this case, we will proceed to close this thread to avoid duplication of effort and the support will continue through the internal case.  



Regards,  

Deivid A. 

Intel Customer Support Technician 


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SmartOne_2000
New Contributor I
2,960 Views

What case? No information has been relayed to me about a case, let alone how to access it or refer to it in future communications.

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