ROG STRIX Z790-E GAMING WIFI how to underclock 13900kf

[zfpuhi21]

Hello,

As mentioned in the subject, I am looking into underclocking/volting my current CPU. Recently I have done the following:

- Updated bios from 0904 to 3001;

- Updated windows 10 to windows 11 (as it was suggested by the people in the forum);

Since then I am having issues when playing games, PoE - Crash, BF6 - Crash it even ends in restarting my computer.

I have monitored the CPU for PoE and it was reaching 96c which is too heavy for a game running on minimal settings, I am currently rocking a 4090 so it does not seems to be the GPU as it is at 65~80% usage.

Additionally some people suggested that it could be from the RAM but I really doubt that as I have tested the ram last week and it was good.

Now back on the topic, as mentioned I wanted to underclock or undervolt my processor. I saw the following video > https://www.youtube.com/watch?v=QV2x8FzNP1k&t=113s , where he changes the input of the "CPU Core/Cache Voltage" which I DO not see in my bios, my best guess is because the video shows bios version 0503. But I know enough on how to properly underclock the CPU with the new bios.
Below I am attaching few screenshots that could assist.

[Vynra]

if your trying to actually underclock your CPU you need to find the setting that sets p core ratio and e core ratio. select sync all cores. Should be in that menu. then type what value you would want. 51=5.1ghz, 53=5.3ghz. you can let the motherboard handle the voltage as it will automatically lower it for that clockspeed. or you can try to find the lowest voltage yourself and set it in global core svid voltage. PLEASE REMEMBER THAT YOU MAY NEED TO CHANGE LOADLINE CALIBRATIONS. 

i mean no offense. you should just RMA the cpu.... they have been pretty good about handling the RMAs

[zfpuhi21]

In this case I disabled the udnervoltage protection from the BIOS and then installed the Intel Extreme Tuning Utility from which I undervolted from -250 to -200 to -150 and then -130. Tested with Cinebench and -130 didn't crash.
Now I opened the program once again and I don't see the change to have been saved (and I did hit apply + save).

Isn't this a good method instead of doing it thru the bios?