Need help for stable undervolt i7-9750h

[wolfhunter]

I need some help to undervolt my i7-9750h while maintaining stability. I've managed to keep it at core -150mV and cache -125mV for the past 2 months. Recently, my laptop would suddenly power off in random moments, so I attempted to reduce core to -100mV and cache -50mV. However, this did not fix the problem. I played Civ6 for a while to generate some logs before it suddenly shut off.

Edit: Laptop specs:
OS: Windows 10
GPU: Nvidia GTX 1050
RAM: 16GB

 

[Lewzke]

I use -110 on core and on cache too with 8750H. Be aware if you have Nvidia gpu you can have crashes with the latest drivers, I have not figured out why but with 551.86 driver everything is stable for months. I highy recomend to install this driver for this issue. Something fundemantally changed with new drivers and it is not related to undervolting, probably related to notebooks... I had crash with undevolt disabled too ... from the 555 driver to the current 560 drivers there is some random BSOD with my notebook GTX1060. (Windows 11)

 

[wolfhunter]

I don't think it is a problem with the GPU driver, I've updated Nvidia drivers once and everything still worked ok.

 

[Lewzke]

Well, this is 560.81, it's the newer ones that crashed for me for some reason, I don't know why ... but if you still got these crashes try 551.86 notebook version for a while and see it.
No idea why the newer ones give me BSOD, but I see no issues with my friends GTX desktop, so it is related probably to notebooks + Windows 11
Some users reported black screen after driver install but I got more BSOD restarts than black screens, it is a truly strange issue for me.

EDIT: try to disable undervolt (stop throttlestop in the background) and see if you still get crashes, if you still do then I highly suspect the Nvidia driver you use. (I got crashes around every 5-7 days, so it was not a daily issue, still annoyed me a lot)

Here is the 551.86, the older stable driver from 2024 March 19: https://www.nvidia.com/en-us/drivers/details/223499/, this is running for me without any issues. I will use this in this year until the newer versions will be stable.

 

[wolfhunter]

I've installed the old driver, and everything seems to working fine again. I've managed to put core and cache at -125mV. Thanks for the help.