How can I UNDERVOLT a GPU (RTX 3070) below 700mv?

[Hubwood]

Hey folks! Thanks in advance!

I would like to further undervolt my RTX 3070 to test out the maximum efficiency.
I know how to undervolt with MSI Afterburner blindly. Really.

BUT I want to go below the minimum 700mv AB provides.

Are there any tools for this?
Is the card even capable of going below that?
EVGA Precision didn't help.
Possible with editing some text alues in files?

 

Thx!
Hubwood

[SavageNeo]

34 minutes ago, Hubwood said:

Is the card even capable of going below that?

no. usually gpus under 1000mv will become unstable. mine is unstable under 1100mv

[SkilledRebuilds]

11 minutes ago, SavageNeo said:

no. usually gpus under 1000mv will become unstable. mine is unstable under 1100mv

I doubt this first half, unless you are talking about AMD specifically because on Nvidia that's false...
I and many people undervolt just fine with no issue. (0.750v to 0.95v with the average good starting point 0.800-0.850+)
My 2080Ti is 0.900v at 1950Mhz, or 1650Mhz at 0.750 if I choose to, but it all runs without issue, and has for months.
(Nvidia specifically)

Hubwood, While I'm not sure of external programs, maybe you'd be better off finding an XOC forum (Extreme Overclocking People)

[Analog]

20 minutes ago, SavageNeo said:

no. usually gpus under 1000mv will become unstable. mine is unstable under 1100mv

My RTX 3080 runs at 0.886V and is very stable.

 

Regarding the question of the op, I am not aware of any other software that would allow lowering the voltage bellow 0.7V

[SavageNeo]

8 minutes ago, SkilledRebuilds said:

I doubt this first half, unless you are talking about AMD specifically because on Nvidia that's false...
I and many people undervolt just fine with no issue. (0.750v to 0.95v with the average good starting point 0.800-0.850+)
My 2080Ti is 0.900v at 1950Mhz, or 1650Mhz at 0.750 if I choose to, but it all runs without issue, and has for months.
(Nvidia specifically)

Hubwood, While I'm not sure of external programs, maybe you'd be better off finding an XOC forum (Extreme Overclocking People)

yes on AMD. was not aware that you can go lower than 1000mv on nvidia.

[Hubwood]

Thx so far for the replys!
MY RTX 3070 runs stable at 0,700mv and 1500Mhz, which I use for less demanding games, which I also cap at 60fps (for Single-Player 3rdperson stuff)
Resulting in a Power draw of only 95W on the GPU and a total of 195W on my system with my undervolted and underclocked i9 9900K.
That way it is dead silent. And Ice Cold.

But I want less, if possible

[Freday2005]

Restart in safe mode and go to the afterburner install folder. Open afterburner.cfg in notepad and change the line "VFCurveEditorMinVoltage" value to as low as you want. My 3070 is running 775mv at 1770Mhz (its rated boost clock) with an afterburner graph that looks like the attached pic. I can get it to the 1980Mhz the card use to boost to at 1062mv at just 925mv. My 3070 will not go under 706mv with any load applied. I have one profile set for 1770 at 775mv for mining and one set at 1980 at 925mv for gaming. Brian from Tech Yes City on youtube does some undervolting videos. Best of luck!