Overclocking (AMD)

Overclocking functionality (called Overdrive) is disabled by default in the amdgpu driver. It is required to use the following functionality:

• Clocks and voltage configuration
• Power cap configuration beyond the default value
• Fan control (RDNA3+, older generations don't need overdrive for this)

Enabling overdrive requires the ppfeaturemask option to be set in the amdgpu driver. There are 2 way to do it:

• For mainstream Linux distributions, you can use the "Enable Overclocking" button in the OC page of the LACT UI. It will automatically create a file with the required setting in /etc/modprobe.d and regenerate the initramfs to include it. This has been tested to work with the default setup on Debian, Fedora, and Arch-based systems.
  • This option will not work on distributions that aren't explicitly supported, or if you have a non-standard initramfs configuration.
  • If this fails, try the boot parameter option.
• Add the setting as a boot parameter. You need to add amdgpu.ppfeaturemask=0xffffffff as a kernel parameter in the boot options. The exact procedure for how to do this will depend on your distro.
  • ArchWiki: https://wiki.archlinux.org/title/AMDGPU#Boot_parameter
  • Gentoo wiki: https://wiki.gentoo.org/wiki/AMDGPU#PowerPlay_feature_mask

To disable overdrive:

• If you enabled it through LACT, select the "disable overclocking" option in the dropdown menu.
• If you set the boot option yourself, remove it.

NixOS

To enable overdrive on NixOS, you can set the following flag in system configuration:

hardware.amdgpu.overdrive.enable = true;