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It was sad seeing AMDGPU limit undervolting semi-recently. A couple complaints or bits of damage ruined a practice that a lot of people were using just fine to

It was sad seeing AMDGPU limit undervolting semi-recently. A couple complaints or bits of damage ruined a practice that a lot of people were using just fine to save significsnt wattage, https://www.phoronix.com/news/AMDGPU-Lower-Power-Limit https://www.phoronix.com/news/AMDGPU-Lower-Power-Limit

fbdab103 2y ago
Super frustrating. From the mailing thread: However, this is not good as it remove under-powering range too far. I was getting only about 7% less performance but 90W(!) less consumption when set to my 115W before. Also I wonder if we as a OS of options and freedom have to stick to such very high reference for min values without ability to override them through some sys ctrls. Commit was done by amd guy and I wonder if because of maybe this post that I made few months ago(business strategy?) I have certainly crossed a threshold where hardware seems good enough. I do not need the 99th percentile performance if it comes with a non-linear increase in power consumption.
- Rinzler89 2y ago
  >I have certainly crossed a threshold where hardware seems good enough. I do not need the 99th percentile performance if it comes with a non-linear increase in power consumption. But this is how AMD, Intel and Nvidia have been pushing performance improvements to consumers every generation. To quote Darth Sidious: "UNLIMITED POWER!"
nottorp 2y ago
Not just AMD. I recently bought a nvidia 4060 card and i can't set the power limit lower than something like 75-90 W, at least in Linux. Of course, it's possible that the lower limit has always been there for nvidia, but I just didn't know because I went without a dedicated video card for like 4 years. For AMD aren't the drivers (partially) open source? Can't the change be reverted?
- forbiddenlake 2y ago
  Yes, for example, the alternative kernel, Zen, did so. https://github.com/zen-kernel/zen-kernel/issues/344 https://github.com/zen-kernel/zen-kernel/issues/344
formerly_proven 2y ago
It's kinda curious that AMD GPUs still don't have idiot-proof power management. Can you still blow them up from software as well?

fbdab103 2y ago

Super frustrating. From the mailing thread: However, this is not good as it remove under-powering range too far. I was getting only about 7% less performance but 90W(!) less consumption when set to my 115W before. Also I wonder if we as a OS of options and freedom have to stick to such very high reference for min values without ability to override them through some sys ctrls. Commit was done by amd guy and I wonder if because of maybe this post that I made few months ago(business strategy?) I have certainly crossed a threshold where hardware seems good enough. I do not need the 99th percentile performance if it comes with a non-linear increase in power consumption.

Rinzler89 2y ago
>I have certainly crossed a threshold where hardware seems good enough. I do not need the 99th percentile performance if it comes with a non-linear increase in power consumption. But this is how AMD, Intel and Nvidia have been pushing performance improvements to consumers every generation. To quote Darth Sidious: "UNLIMITED POWER!"

nottorp 2y ago

Not just AMD. I recently bought a nvidia 4060 card and i can't set the power limit lower than something like 75-90 W, at least in Linux. Of course, it's possible that the lower limit has always been there for nvidia, but I just didn't know because I went without a dedicated video card for like 4 years. For AMD aren't the drivers (partially) open source? Can't the change be reverted?

forbiddenlake 2y ago
Yes, for example, the alternative kernel, Zen, did so. https://github.com/zen-kernel/zen-kernel/issues/344 https://github.com/zen-kernel/zen-kernel/issues/344

formerly_proven 2y ago

It's kinda curious that AMD GPUs still don't have idiot-proof power management. Can you still blow them up from software as well?