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.

  • MentalEdge@sopuli.xyz
    link
    fedilink
    arrow-up
    2
    ·
    4 days ago

    Changing voltages and fan curves is super situational. And depends on how much you value noise over performance.

    That said, I undervolted and underclocked the i7 cpu on my G501 gaming laptop back in the day.

    This helped a ton, because the heatsink between the discrete GTX 660M and the CPU, shared a heatpipe. The CPU would only throttle at 90, while the GPU would throttle at something like 75. This meant that because it was basically always hotter, heat from the CPU would conduct via the heatpipe INTO THE GPU, causing it to always thermal throttle, and be unable to be cooled. Because even though it was maxing out and trying to cool down by throttling, the CPU would just keep going because for it the temps were fine. So it would keep pumping heat into the heatsinks and heatpipes, which would then keep the GPU hot, too.

    Undervolting the CPU allowed it and the GPU to run at closer to same temps, raising FPS by way of allowing the GPU to actually run a full tilt, even though the CPU was then significantly slower.

    • CronyAkatsukiOPA
      link
      fedilink
      arrow-up
      1
      ·
      edit-2
      4 days ago

      Yes, agree that they are situational. In case if my laptop I’m unervolting mycou because if I won’t it will just crash when used at max speed.

      Edit: in case of my brother pc, the temps were just horenderous for the perforformance he was getting. Plus the fans were barelly on even at 85C. Undervolting and making the fan curve more agresive allowed him the get much better temps at same fan speed, and lets him play some games he wasn’t able to before cause of themps. And the fans even at 100% are quieter than my laptops at 50% so he doesn’t mind them at all.