Steam Deck Software Undervolt

This repository offers an easy way to undervolt a Steam Deck as safely as possible and without entering the BIOS or disabling read-only using RyzenAdj and systemd targets based on Chris Down's guide.

A precompiled version of RyzenAdj is provided for your convenience, built in Arch Linux from commit f6fbf9d17f70d9736bc8294ccd8438ae94804aa9.

Warning

As with any undervolt exercise caution, while this project greatly reduces the risk of bricking your deck, it does not in any way guarantee you won't damage your hardware. Use at your own risk.

Installation

Clone this repository, with the repository root folder as current folder make the script install.sh executeable with chmod +x install.shand run it with root privileges: sudo ./install.sh

It will install a new service set-ryzenadj-tweaks.service, create some additional service activation rules, and copy a bunch of files to the /home/deck/.local/bin folder.

Undervolt amount can be changed by editing /home/deck/.local/bin/set-ryzenadj-tweaks.sh

By default a -5 curve optimization is applied (via -set-coall), in the 'undervolt-on' section which should be stable on most hardware.

A much more ambitious -15 curve optimization is applied in the experimental section. This setting might be stable but it might also cause a crash/hang if applied.

Activation

By default no undervolt is applied until you run either the on.sh or the experimental.sh scripts:

The on, off, and experimental scripts

Add on.sh, off.sh, and experimental.sh from the /home/deck/.local/bin folder as non-steam apps and run them from game mode to control undervolt status.

• on.sh enables undervolt in the undervolt-on section. This setting will be restored if you restart your deck unless you have run the off.sh script before restart.
• experimental.sh enables undervolt in the experimental section. The experimental setting is applied only once and is not restored if you restart your steam deck.
• off.sh disables undervolt.

Uninstall

If you don't want to undervolt anymore you can uninstall the service set-ryzenadj-tweaks.service, the additional service activation roles, and delete the files from /home/deck/.local/bin via the uninstall.sh script. With the repository root folder as current folder make the script uninstall.sh executable with chmod +x uninstall.sh and run it with root privileges: sudo ./uninstall.sh