CPU Fan Speed

[IT Guru]

My CPU fan RPM was 2700 all the time.

Before I remove it from heat sink.

To clear dust from fan + heat sink.

Now it is working at only 2556 RPM!

I have disable Q-fan in BIOS & want always to run at max speed irrespective of CPU temperature.

I have checked RPM in speed fan 4.31, Hardware sensors monitor, in BIOS it self.

I have Asus P5RD1-VM M/B, P4 2.93 Ghz. Now a day temperature 37-38 C. Belive priviously it was 31-32 C.

 

[unclewebb]

Sounds like you did such a good job removing the dust and junk out of your heatsink that now it is more efficient so the fan is running slower to compensate.

Some fans have a temperature controlled diode in them so they automatically adjust their speed a little bit depending on the surrounding temperature. Less heat from your heatsink will equal less rpm from your fan.

 

[IT Guru]

But I want to run it on top / maximum spped, irrespective of temp. So will will being cpu temp down. How to achive same.


Or they may be a case that dust might have enter in cpu fan causing it to run slower ?