I9-12900K Strange UnderPower behaviour

[Mscapini]

I have set Turbo Boost Power thresholds to 180W to stabilize the Core Temperature and avoid Thermal Throttling.

I ran a stress test to check desired behaviour.

Everything seems fine for the first 10 min, with T Core under 90C and never reaching 100C, but afterwards the Thermal throttling starts; it is then triggered periodicaly and never stops. 

This is because the Core TDP goes to a level higher than the threshold set and never goes again to the desired setting (and I do not undestrand why !!)

[Mscapini]

Some additional info. 

When the Thermal Throttling is activated, if I push the "refresh" button on XTU the original configuration is shown, as If the customized config had been lost.

As you can see from the attachment, the app just before pushing the Refresh button is instead showing the custom config.

If I re-apply the custom config loading it from the one saved, the correct behaviour (no Thermal Thr) starts againg. 

Using a different App (ThrottleSTop) the Power Threshold is instead steadily applied and Thermal Throttling is never triggered.

[DeividA_Intel]

Hello Mscapini,  

Thank you for posting on the Intel® communities. I am sorry to know that you are having issues with your Intel® Core™ i9-12900K Processor.  

In order to better assist you, please provide the following: 

1. Just to confirm, are you overclocking the CPU?

2. Is this behavior present when the unit is using the default settings?

3. Is the Intel® Extreme Memory Profile (Intel® XMP) enabled? If so, what is the speed of the RAM?

4. Are you manually changing the voltage of the CPU using the Intel® Extreme Tuning Utility (Intel® XTU)?  

Best regards, 

Deivid A.  

Intel Customer Support Technician 

[Mscapini]

1. I am not overclocking. I a am trying to set the Max Power settings to 180W instead of the unlimited, using XTU. If I do the same with other tools (e.g. ThrottleStop) the issue is not present: the configuration is steadily set and not randomly re-setted to the standard one as it happens using XTU.
2. Of course not, since the issue is related to point 1
3. I do not know. How can I check it ?
4. No, no manual Voltage setting.

[DeividA_Intel]

Hello Mscapini, 

Thanks for the information provided. Before we continue further, as s test, try the following:

1. Update your BIOS version, currently you have F3 and the latest is 20a. You will need to check with Gigabyte for instructions.

2. You can check any Intel® Extreme Memory Profile (Intel® XMP) settings and profiles from the BIOS. 

Regards,  

Deivid A.  

Intel Customer Support Technician 

[Mscapini]

Thank you for your suggestion, but I am not going to do a risky operation such a BIOS update just for debugging your software.

The PC is now working perfectly and smoothly after having set the Power Thresholds using ThrottleStop, and the current BIOS.

If you want you can close the case. I am not going to use XTU any more.

[DeividA_Intel]

Hello Mscapini, 

Thanks for your response. I am sorry for the inconvenience. I will proceed to close this thread as you mentioned. However, you can open a new one in case you need further support or if you face any issues with our products.

Best regards, 

Deivid A.  

Intel Customer Support Technician