Sajin
Sounds like you didn’t set the curve correctly. All points past your undervolt point need to be a negative number like -300 to prevent the card from going past your undervolt point.

zuckuss00

Sajin
Sounds like you didn’t set the curve correctly. All points past your undervolt point need to be a negative number like -300 to prevent the card from going past your undervolt point.

You are talking about the "Core Clock" correct? I've been setting that to -250 then adjusting the "Curve Editor" to 900mV at 1920MHz. Applying then saving to profile 1. The curve after 900mV is flat.

Is there something else here I am simply missing? Probably so..


The volts should never exceed the limit I set correct?
 
Thanks all.

zuckuss00

kraade
Glad you got it working, I had a 3080 I was able to take down to 
835mv and hold 1890 clock and bumped the mem +1100 and got 99.7% performance at -108w and that took out a ton of heat too

I'll give those values a swing!
 
Yeah, the 3080 FTW3 is a work horse and gives off so much heat. I have a smaller mid tower Corsair 4000x and it gets a little hotter in there than I like. Nothing dangerous but I'm just trying to dial it back a bit.
 
I've already improved it a lot. I'm gonna work on getting the MSI AB values to sync over to PX1 also so I can tune the fan curve a bit better.

zuckuss00
Hello folks,
I'm new to undervolting. I recently got a 12GB EVGA RTX 3080 FTW3 and I'm playing around with undervolting to reduce temps and powerdraw via MSI AB.
The 3080 FTW3 draws alot of power roughly 400watts on full load of 2010MHz.
Anyways using MSI AB I set my curve to 1920MHz at 900mV and saved as profile 1. I do not use PX1 at all at moment.
I've noticed during benchmarks and while gaming the GPU will still boost past these limiters I've set all the way back to 1.1mV and 2010MHz for moments.
Is this normal or should the GPU never boost past the limits I've set on the curve? Again I'm new to this and have no idea.
Thank you all for the assistance.

kevinc313

zuckuss00
Hello folks,
I'm new to undervolting. I recently got a 12GB EVGA RTX 3080 FTW3 and I'm playing around with undervolting to reduce temps and powerdraw via MSI AB.
The 3080 FTW3 draws alot of power roughly 400watts on full load of 2010MHz.
Anyways using MSI AB I set my curve to 1920MHz at 900mV and saved as profile 1. I do not use PX1 at all at moment.
I've noticed during benchmarks and while gaming the GPU will still boost past these limiters I've set all the way back to 1.1mV and 2010MHz for moments.
Is this normal or should the GPU never boost past the limits I've set on the curve? Again I'm new to this and have no idea.
Thank you all for the assistance.

'Undervolting' is a reddit tier poor solution to bad cooling and is highly unreliable. Fix your cooling.  Nothing like paying $300+ more and running the card at 3070 Ti performance levels.
 
If you are thermally limited just use a lower power limit and apply an overclock.  Or lock clock with Nvidia-SMI, adjust core offset and limit power.

kevinc313



I fully understand "undervolting", how to do it, have tested it extensively, the behavior it produces, how unstable and unreliable it is, and how unnatural it is to fight against the card's control firmware/bios aka Nvidia Boost.  Also how ridiculous it is buy a $1000 gpu and not cool it properly.
 
I also provided TWO superior options in my post for capping power consumption, temps and heat while overclocking and optionally locking clock.  There are plenty of legitimate reasons to do that.
 
People like to think they are clever manipulating the voltage frequency curve, but they are not.

kevinc313

HeavyHemi

kevinc313

zuckuss00
Hello folks,
I'm new to undervolting. I recently got a 12GB EVGA RTX 3080 FTW3 and I'm playing around with undervolting to reduce temps and powerdraw via MSI AB.
The 3080 FTW3 draws alot of power roughly 400watts on full load of 2010MHz.
Anyways using MSI AB I set my curve to 1920MHz at 900mV and saved as profile 1. I do not use PX1 at all at moment.
I've noticed during benchmarks and while gaming the GPU will still boost past these limiters I've set all the way back to 1.1mV and 2010MHz for moments.
Is this normal or should the GPU never boost past the limits I've set on the curve? Again I'm new to this and have no idea.
Thank you all for the assistance.

'Undervolting' is a reddit tier poor solution to bad cooling and is highly unreliable. Fix your cooling.  Nothing like paying $300+ more and running the card at 3070 Ti performance levels.
 
If you are thermally limited just use a lower power limit and apply an overclock.  Or lock clock with Nvidia-SMI, adjust core offset and limit power.

 

kevinc313



I fully understand "undervolting", how to do it, have tested it extensively, the behavior it produces, how unstable and unreliable it is, and how unnatural it is to fight against the card's control firmware/bios aka Nvidia Boost.  Also how ridiculous it is buy a $1000 gpu and not cool it properly.
 
I also provided TWO superior options in my post for capping power consumption, temps and heat while overclocking and optionally locking clock.  There are plenty of legitimate reasons to do that.
 
People like to think they are clever manipulating the voltage frequency curve, but they are not.

Nonsense. These cards all use more voltage than they need for yield.  It is no more or less reliable than any other method of controlling clock speed versus voltage. If you're unstable, you're doing it wrong whether  overclocking or under volting. Just another example where miners, are not top tier intellects.
 
 

 
Nonsense.   You just posted a bunch of handwaving.  
 
'Undervolting' is known to be a particularly stupid manipulation of the voltage-frequency curve. 
 
I posted two clearly superior ways to limit power and/or lock clocks, which is the proclaimed goal of 'undervolting'.