Comment 13 for bug 1389077

My GPU seems fine, well under the high threshold. I can see what the logic is of throttling the CPU because the GPU is overheating--if the CPU is throttled then less data is being fed to the GPU so the GPU is indirectly slowed. But you're right, reducing the CPU by half is overkill. And that seems to be my problem as well. Without the powerclamp, my temperature goes slightly over the high threshold, maybe 87 deg with a threshold of 85 degrees, but the idle goes at 50% for quite some time.

I don't want to remove the powerclamp driver, since I don't want my CPU to overheat. But 50% CPU reduction to control temperature that is slightly exceeding the max makes my machine unusable.

Looking at the documentation for the powerclamp technology and the proc values, it looks like any level under 50% can be selected. I don't think it is powerclamp itself choosing the value, so there must be some thermal protection module that is choosing all or nothing. It really should gradually start injecting until the temperature is acceptable, IMO.