Undervolting issues linked to Win 11 or Bios?

[ISuckAtComputers]

So I’ve got a problem with something not obvious to me and really don’t have the experience to understand what to look for.

Issue:

I’ve been trying to undervolt my GPU and have had zero success so far. Almost anything from stock frequencies to lower will eventually crash on something. This is especially bizarre to me since I’ve been through about 7 different 30 series gpus over the past year all will eventually prove to be unstable therefore I don’t see silicon lottery as a factor here. Currently I have an EVGA RTX 3090 FTW3 and I’m down to 1790MHz at 875mv crashing at times. I’ve spent hours adjusting these curves at various frequencies and voltages with no luck.

What’s annoying about all this is my partners win 10 rig has had 3 various 30 series cards and they all undervolted perfectly. Currently has a TUF 3080 1860MHz at 875mv with no issues and this was the same previously. All that had to be done was set the undervolt, run superposition, play some games and possibly small adjustments to make if required.

My system just overall isn’t as stable as my partners even at stock and I refused to see this as a win 10 vs 11 issue! xD

Possible causes:

I have undervolted my CPU also but this appears to be running fine since at stock gpu setting I have rarely had crashes. I have tightened my DDR5 ram timings to 36/36/72 since that was one of the memory profiles provided for my Gskill ram kit. (Sticks are cl40 at stock) Maybe this is the issue however extensive OCCT and prime 95 testing was done for both of the above and found no issues…

I also had to change various TPM settings etc to get valorant to work on Win 11 and just followed some of the bios guides which potentially messed something else up.

Specs:

My rig:
I7 12700k
Z690 aorus master
RTX 3090
32GB Gskill DDR5 6000mhz CL40

Partner:
5800x
B550m-k prime
32GB Corsair 3200MHz( yeah I know AMD 3600 blah blah blah)
RTX 3080

 

[Deleted member 185158]

I can only think that the GPU you have is a very high leaker. Too many transistors stop working from the under-volt, and it simply causes an issue.

For most chips, gpu/cpu, to lower leakage, you run the chip cooler. Though that is the idea to under-volt to get lower temps, it's often times the incorrect approach.