Comment # 3 on bug 106188 from tempel.julian@gmail.com

I figured out that the cause of the described behavior is that it doesn't allow
me to really increase the GPU clock.
So I can set "echo "s 7 1194 900" >
/sys/class/drm/card0/device/pp_od_clk_voltage" and it works correctly.
But when I set e.g. "echo "s 7 1199 900" >
/sys/class/drm/card0/device/pp_od_clk_voltage", the clock doesn't get over
pstate 6.

Is this restriction by purpose? It's not there with Wattman on Windows.