undervolting i7 10780h generating whea uncorrectable error.

[shanelol123]

Hi basically when i try to undervolt past -90mv on my cpu core its generates a whea uncorrectable error in event viewer and then after 10-20 min crash. The cpu cache can run up to -125mv with no issues . Weird thing is that in the past i undervolted the cpu core up to -140 with no issues , but after a windows update it fucked up or i dont really know what to say . Anything that could make my cpu lower its temperatures except undervolting are apreciated:

 

[eucaloving]

i'm late to this thread but found it by searching. i'm also on a i7 and find that over -0.08 gives me a "WHEA_UNCORRECTABLE_ERROR" bluescreen. have you found out anything else about this since april? any tweaks or tips?

currently trying this out

 

[unclewebb]

@eucaloving
If you are going to set the core and the cache to different values, it is the core that should be set to the larger value. An offset somewhere around -75 mV for both the core and the cache is typical for a 10870H. Post a screenshot of ThrottleStop so I do not have to guess what CPU you might have.

Do some Cinebench testing when using different voltages. If using different voltages does not improve temperatures or performance then there is no reason to use different voltages.

WHEA_UNCORRECTABLE_ERROR

It does not matter how much voltage another user's CPU needs. If you have these errors when undervolting, your CPU needs more voltage than what you are giving it.

 

[eucaloving]

Hi unclewebb, thanks for the reply - I did post a screenshot above in my original post, not sure if you saw it? Thanks for the core/cache recommendations, I set it to -0.0752 and seems to be running a lot cooler on my lap and no BSOD for at least a day!

 

[unclewebb]

I did post a screenshot

Your screenshot does not show what CPU model you have. It does not show your TPL settings.

 

[eucaloving]

Ah, my bad. Does this help?

 

[unclewebb]

Does this help?

YES!!

An 8550U with a 15W TDP rating is a completely different animal compared to a 10870H. Not sure why you posted in this old thread.

I do not check the Speed Shift EPP box on the main ThrottleStop screen. When this box is not checked, Windows will manage the EPP value. Change Windows power plans and the EPP value will automatically change. If you do want to set your own EPP value then change 128 to 84. The Windows Balanced power plan typically defaults to 84 but this can vary from one computer to another. The FIVR monitoring table will show what EPP value the CPU is using. This should change automatically as you change plans when Speed Shift EPP is not checked.

The most important box to check is the MMIO Lock box in the TPL window.

Clear the Disable Controls box and increase the MSR PL1 power limit up to somewhere between 30 and 44. A higher power limit will allow your CPU to run faster for longer. The downside is more heat and higher temperatures. Your CPU can handle this. Some users do not want their laptop running at sky high temperatures so adjust this power limit accordingly.

 

[eucaloving]

Thank you so much! Sorry about the old thread - I stumbled through a search.