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Cpu fan working oppositely.

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Last response: in CPUs
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Anonymous
a b à CPUs
May 24, 2010 7:42:03 AM

My fan lowers speed under load and increases speed when idle. How do I fix this.
a b à CPUs
May 24, 2010 8:39:40 AM

You don't fix this because it isn't broken. Fan speed also lowers when under low load because there is no need for a higher rpm as there is less heat.

You only need to be concerned if it doesn't ramp-up under load.


Failed to read properly.
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a c 87 à CPUs
May 24, 2010 9:19:52 AM

It does sound odd however. I'd double check you plugged it in correctly? Not sure how you'd plug it in backwards...
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a c 133 à CPUs
May 24, 2010 9:23:57 AM

HMMMM the first question any of you should have asked is????

What are your temps? Ahh thats it.
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a b à CPUs
May 24, 2010 9:34:07 AM

We need more system details.
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a b à CPUs
May 24, 2010 9:43:30 AM

do you have any other Software controlled fans?

the only explanation i can come up with is that under load your system fans are ramping up, and so cooling your CPU enough to lower its own fan speed.
tbh though, that sounds so stupid now that i have written it that it should probably be ignored.

have you been looking at some software to determine fan RPM? or are you going by noise? it could well be another component making the noise.
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a b à CPUs
May 24, 2010 2:53:18 PM

Quote:
My fan lowers speed under load and increases speed when idle. How do I fix this.

What fan? CPU Fan, GPU Fan, Electric Fan? :) 
Joking aside we need more details as requested by the posters.
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