borisburke: The temp and fan speed go up when left idle. Like an invisible screen saver doing work.
I've heard that some bitcoin miner viruses can behave like this, but scans are clean.
It's a GeForce GTX 1080 Ti with up-to-date drivers.
Are they going up simultaneously or is the fan speed increase lagging behind temperature increase? I'm still convinced the GPU is in fanless mode that ramps up fans at 60C. And honestly, that temp isn't too much to worry about since it's in operating spec.
Below are some tips if you're really concerned about it.
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I'd watch these changes using
HWInfo64:
1. Idle, AB off (0 RPM, 60C steady expected)
2. Idle, AB on (> 0 RPM, 36C steady expected)
3. Windowed GPU-intensive game, AB off (0 RPM, 60C @ launch; > 0 RPM, 55-80C steady expected)
4. Windowed GPU-intensive game, AB on (> 0 RPM, 60C @ launch; higher than previous RPM, 55-80C steady expected)
If you get any different results, report back.
Alternatively, you could try ending your non-essential background tasks one at a time through Task Manager. You could also try booting up in safe mode and compare idle to running a GPU-intensive game to rule this out too.
Failing that, you might want to open up your PC, dust it out, and record that all of your GPU and case fans are functional with your phone while running a GPU-intensive game.
Failing that, can always try reverting to previous GPU drivers.
And finally, if you're running anything less than a 1 intake, 1 exhaust or 1 exhaust only fan config, might be time to add in some extra intake fans depending on your case's airflow design.
EDIT: and if that also fails, might be a good time to backup your files and reformat due to toxicTom's suggestion about malware miners.