CPU Fan problem
Dear anyone who may be able to help me:
Please help me! After about two weeks of usage, my new system has started acting up. I noticed about two days ago that my CPU fan heatsink speed increases gradually from system startup. I recorded the history a couple of times for interest's sake, and here are some values.
After 1 minute:
After 3 min:
After 5 min:
After 10 min:
After 20 min:
Right now, it has been approximately half an hour since system startup, and the fan speed is around 3245 RPM (and rising). My worry stems from the fact that the heatsink's specified speeds range from about 2500 RPM to 3400 RPM; when the fanspeed reaches 3400, I get a warning beep. The heatsink worked fine until about two days ago, when I started noticing this problem. Some additional info:
heatsink = standard Intel heatsink that came in the CPU retail box
ASUS P5GD1 motherboard; Q-fan is DISabled
ambient temperature = approx. 26-27C
What worries me even more is that the entire time, the system is essentially at idle (approx. 1% cpu usage at the most) and the temperature and voltage monitors tell me that all values have remained approximately the same since startup (my Prescott idles at around 46-48C).
What might be the problem here? I have already decided to replace the stock heatsink with a more performance-oriented one (any suggestions for that would also be helpful), but I'm worried I might run into the same problem. Why does the fanspeed increase linearly with time when the system isn't doing anything, and ambient temperatures remain constant?
Needless to say, this puzzles me a great deal, and none of my friends or colleagues know what to say.
Most anxiously awaiting some enlightenment,