[Bug 93826] 2560x1440 @144Hz graphic glitches and bad refresh rate

https://bugs.freedesktop.org/show_bug.cgi?id=93826

--- Comment #64 from iuno@posteo.net --- (In reply to Alex Deucher from comment #63)

Are you forcing the power state to high? The mclk shouldn't be affected by the display clock.

No, setting the refresh rate to 144 results in high mclk, even when I set power_dpm_force_performance_level to low or pp_dpm_mclk to 0. Using 120 Hz, I could echo 0 or 1 to pp_dpm_mclk. I also got the power meter on now:

memory dpm state 0 (150 MHz): 77 watts memory dpm state 1 (1250 MHz): 112 watts

So there is a difference of 35 watts. Using Windows, I'm below the 80 Watts even with 144 Hz.