John Andersen wrote:
On Saturday 09 September 2006 00:20, Basil Chupin wrote:
One "speed controller" controls the fans in the Antec PSU and the 120mm case fans and the other "speed controller" controls the blower cooling the heat pipes on the Gigabyte heatsink. It was the latter that was making the high-pitched noise.
So these things are not knobs you twiddle, but rather something the OS is supposed to manage?
No, these *are* knobs I twiddle to manually increase/decrease the speed of the blower or fans. The fans are automatically controlled by the PSU from input from sensors on the motherboard. The knob-twiddling is a manual control which I can use to override the base speed of the PSU and the case fans if I think that the temperature inside the case should be lower. In hotter weather I up the fan speeds for all 4 fans (2X PSU, 2X case) to get the air inside the case moving quicker. I set the RPM of these fans at ~1650 RPM. I twiddle with the heatsink blower knob when ambient temperature goes up to keep the CPU temperature down. The speed of the blower is adjustable from 2000 RPM to 4500 RPM. I normally run it at 2500 RPM but have never had to go past 3200 RPM to keep the CPU at a comfortable temperature. Highest it ever got to on a very hot day here was 56C. Cheers. -- This computer is environment-friendly and is running on OpenSuSE 10.1