AM06 Pro tip: keep CPU fan from running when temps are low to save power

[gsky2]

Here is a tip to keep the CPU fan off when the core temp is under a safe threshold. Go into the BIOS and get into Fan Control. Configure it as follows:

Code: Select all

Fan Control = Auto
Low Temperature = 50
Medium Temperature = 65
High Temperature = 80
Critical Temperature = 95
Low Pwm = 0
Medium Pwm = 35
High Pwm = 60
Temperature Hysteresis = 2
Pwm Frequency = 25kHz
Fan Polarity = Positive

For my system which sits in a room where room temp is around 19C, the CPU idles around 44C and the fan stays off. Totally silent. It comes on when there is a load sufficient to raise the temp above 50. I believe the BIOS treats these three points like a gradient applying 0-35 pwm from 50-65C and then 35-60 between 65-80C. You can adjust these set points as you wish.

Note that I think there is a typo in the BIOS. I assume that the values you enter for Pwm are not actually kernel pwm value, but % of max fan speed. All the fans I have directly controlled by linux drivers had pwn values ranging from 0 to 255. A value of 60 would be really small.