NVidia G310M Set Performance Level to Zero Force

Section "Device"
 # Force Powermizer to a certain level at all times
 # level 0x1=highest
 # level 0x2=med
 # level 0x3=lowest
 Identifier "Videocard0"
 Driver "nvidia"

 Option "NoLogo" "True"
 Option "Coolbits" "13"
 Option "RegistryDwords" "PowerMizerEnable=0x1; PerfLevelSrc=0x2222; PowerMizerLevel=0x3; PowerMizerDefault=0x3; PowerMizerDefaultAC=0x3"
EndSection

That’s all 🙂

My computer:

• Intel i5 2.6 Ghz 4Gb Ram
• Centos 6.7 x64
• Nvidia GeForce 310M 512 Mb
• Driver version 331.67

You must set Coolbits value to 13. Then restart your computer. After this you can overclock your video card.

Good luck 🙂

Source: https://devtalk.nvidia.com/default/topic/572053/-solved-forcing-maximum-power-saving-on-the-desktop-quot-minimum-power-quot-mode-for-powermizer-/