Trying Out AMDGPU Overdrive Radeon Overclocking On Linux 4.15

[linuxgeex]

I don't have one of these cards but I have a friend who has had success with improving performance with the stock cooler by undervolting and underclocking the memory for games that are thermal throttling. Frame rates rise from the high 20's to low 40's in some cases. His card thermal throttles at 80C.

[Niarbeht]

Right, just tried it on my RX570;

echo -10 > /sys/class/drm/card0/device/pp_mclk_od

And it bumped the mem clock from default 1750Mhz to 2100Mhz, resulting in white screen and Kernel hang by amdgpu driver code.

Yep. So, definitely don't do that.

There's a program whose name I can't remember that lets you edit the powerplay tables to allow you to underclock. OhGodATool I think? Something like that.