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4090 Power limit vs undervolt?

E

Elric82

Limp Gawd
Joined
Jul 15, 2017
Messages
164
Hello,

i've seen different videos about it. some advice to undervolt, other to limit power slider.

i've limited the power slider to 80% without any FPS loss but that does not help another issue : coil whine.

Does undervolting works fine on 4090 and will limitt watts as well?

Thanks
 
I've always used the power level slider which in effect limits the volts being used for core/mem on all my GPUs. Of course not sure if that is the same with this new 4090 fiasco.
 
I'd use the power limit slider. Have seen some posts mention that it's not recommended to undervolt the 4090.
 
I don’t remember the details, but one video I saw mentioned that undervolting the Ampere way limits two other clock rates behind the scenes leading to lower performance. This is the opposite of Ampere where it was basically free performance for less power.

The recommended way is to use the power slider and take a smaller hit on performance.
 
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