linux-undervolt

Undervolt CPU on Linux

Disclaimer

I take no responsibility for any damage done to your system. This was only tested on an Intel i7-6700HQ (My system is a Dell XPS 15 9550)

For a safer alternative, if you are dual booting Windows, use the Intel® Extreme Tuning Utility and reboot back into Linux.

Dependencies

• msr-tools

Instructions

Make sure you have the msr module loaded.

modprobe msr

Usage

usage: undervolt.py [-h] [--cpu-core mV] [--intel-gpu mV] [--cpu-cache mV]
                    [--system-agent mV] [--analog-io mV] [-r] [-c]

Undervolt Intel i7 6700HQ (not tested on others)

optional arguments:
  -h, --help         show this help message and exit
  --cpu-core mV      undervolt the cpu core
  --intel-gpu mV     undervolt the intel gpu
  --cpu-cache mV     undervolt the cpu cache
  --system-agent mV  undervolt the system agent
  --analog-io mV     undervolt the analog I/O
  -l, --list         apply undervolt as list in the above order
  -r, --reset        reset voltages
  -c, --check        check undervoltage

Credits

• @mihic for writing this guide
• @andikleen for his python msr functions
• This forum on notebookreview.com