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cpu fan too loud

U

UnfaTeFuL

Limp Gawd
Joined
Jun 23, 2002
Messages
460
I have a generic cpu fan that came with the computer. It runs around 5700-5900 rpm and is too loud. I think it's around 40-45 dB.

Should I get a new one or is there a way to lower the rpm?
 
your best bet is to get a heatsink (like some of thermaltake's or Zalman's solutions) that allows for high CFM and low rpm.

you could prolly mod the heatsink fan by placing a potentiometer (spelling is crap this morning) inline and doing it that way, but i'm no EE genius.

cheers,

dave
 
Cut the ground wire to the fan. Get a SPDT switch. Solder the wire from the fan to the common (middle) lead. Then solder the ground wire going to the connector to one side and put a wire going to +5V on the other side. This is a 12V/7V switch.

You can also use a potentiometer, I recommend that in conjunction with a fixed resistor so you can't get down below the minimum voltage the fan requires, though. But the 7V/12V switch should be good enough...

But if your fan is generic and it came with the computer, your heatsink may very well suck too. If it's some crappy Al heatsink, then pick up like a Thermalright SK7 somewhere for cheap (assuming you're not doing EXTREME overclocking) and you can either pick up a new fan with it (recommended, get a ball bearing fan, yours is probably sleeve now) or do the 7V/12V mod on the old fan and reuse it.
 
i have a thermalright sk800 or something like that. it's the fan that's too loud. im not too good with circuits but i can give it a try.

thanks
 
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