Today I undervolted my brother's amd rx 6950xt by 120mv ( at 125mv a game we tested would crash at 100% usage and max power draw ).

Also made his fan curve more agressive cause by default it never wen't over 55% fan speed which is just stupid.

This in total lowered his temps across in mist games from average 80C to 55-60C and lowered power draw on average by 20W.

It also allowed him to play supraland at max settings with gpu not going over 70C instead of lowest setting 80C on average.

So yeah, if you never tried or bothered with undervolting try it and post your results. Or if you did it before post your story and results.