David C. Rankin wrote:
Listmates,
I have a relatively new 11.0 box with a phenom 9850 that is fairly quiet. Recently I noticed the CPU fan noise quite a bit more than usual. I initially thought that fan control was going on the fritz. I checked the temps and fan speed with lm-sensors and confirmed fan RPM was pegged near max:
CPU Fan: 5338 RPM CPU Temp: +33.0°C
That's quite a lot of RPMs for that temperature.
completely vanished. The box was for all practical purposes near silent. I checked the temps again:
CPU Fan: 3282 RPM CPU Temp: +31.0°C
Far more reasonable.
That is absolutely incredible. Evidently the fan thermostat on the stock AMD cooler that comes with the processor has less than a 2 degree spread between its 3200 RPM low noise state and its 5200 RPM annoying as hell state.
David, the fan speed regulation is not done by the fan itself, but by software. The temperatures are measured, and the results fed back to the PWM regulator on the motherboard. After my experiments with the Gigabyte board in Feb/Mar, I haven't looked at measuring fan speed and temperatures - my MSI board has a new sensor device, for which my kernel doesn't have a module. /Per -- /Per Jessen, Zürich -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org