Arch Linux

Everycoolmelon

Member

Registered: 2024-02-04

Posts: 1

How to set hard AMD APU wattage limits?

Hey all, new user here, and I have a very specific thing I'm trying to achieve on arch that, weirdly enough, I haven't been able to find an answer to so far. I need to limit my APU(7840u) to 15w combined CPU and GPU power, as I want to play low power games and get better battery life without having to min-max power profiles for every game. I know there are ways to limit frequency and CPU usage using programs like tlp and cpu frequils, but nothing so far on limiting raw APU power. Are there packages that I can install that would allow me to have such direct control over my system?

The Loko

Member

From: Spain

Registered: 2014-07-23

Posts: 103

Re: How to set hard AMD APU wattage limits?

AFAIK is not possible to limit APU combined TDP. You could set GPU power limits like here (https://wiki.archlinux.org/title/AMDGPU … _(default)) or using CoreCTRL.

Then you could limit CPU max freq using TLP or manually (https://wiki.archlinux.org/title/CPU_frequency_scaling).