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Fan rev'ing issues

alkaline

Gawd
Joined
Jan 31, 2006
Messages
727
I recently built a new computer. Since I first turned it on, i noticed that the exhaust fan on the top of my case (Lian Li PC65B) likes to rev quite a bit. At random, it will double in speed, slow down, then double speed again......it sounds like someone reving an engine. The fan is plugged into a connector with sense, and it will not reach any other ports. What should i do to fix this? Its very annoying. Do i need to buy a fan controller? If so, what should I get?"

Fan layout is as follows:
2x80mm fans [1 exhaust on top of the case, 1 intake on the back]
2x80mm fans [intake on front of the case, at the bottom. these are controlled by a 3 setting switch]
1x92mm CPU Fan [Zalman fan/heatsink Cu]

Other:
PSU fans, GFX fan, northbridge fan
 
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