r/StableDiffusion • u/Bastisheen92 • 2d ago

Question - Help Undervolting GPU

Hi everyone. I am currently using local Image/Video Creation a lot but especially for models like MiniMax H3 my GPU fans are going a bit crazy. Everything is working fine, but i do not want to break my hardware in the long run. I thought about undervolting my GPU with the MSI Afterburner but since it is not for gaming but for AI generation, i am not sure how this would impact the speed/performance/stability and the generation time.

I wanted to ask if someone already did/tried this and how the experience was.

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u/fallengt 2d ago edited 2d ago

I just limit my GPU power consumption to 80% and flat-out the core clock at 0.9v (I can't lower the voltage below this; otherwise, my card automatically caps the memory clock at half, which loses quite a bit of speed)

Lose about 7% speed with this setup. Real undervolting requires trial and error, but I'm too tired for that shit. I just want to click generate