This has been bugging me for a while as I notice there is now way to force powermizer to always use level 3 even after a reboot.

Luckily I found a handy youtube video showing how to do this simply by adding an extra line to a file.

Here it is:

It's a simple matter of adding a single line of text:

Option "RegistryDwords" "PerfLevelSrc=0x3322; PowerMizerDefaultAC=0x1"

to the following file:


located at:


Please note that this line is added to the "device" part of the file


Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
Option "RegistryDwords" "PerfLevelSrc=0x3322; PowerMizerDefaultAC=0x1"
    VendorName     "NVIDIA Corporation"

The net result of this is that when you restart and look at nvidia-settings you get this:

Screenshot from 2013-12-06 21:57:59

and it stays on level 3