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Connecting CPU fan/heatsink to chassis/extra fan connector?

Discuss Connecting CPU fan/heatsink to chassis/extra fan connector? in the PC Cooling forum on Dev Hardware.
Connecting CPU fan/heatsink to chassis/extra fan connector? PC Cooling forum discussing heatsinks, fans, water cooling, video cooling, HDD coolers, and HSFs. Talk about installation and cooling effectiveness of brands such as Thermaltake, Coolermaster, Zalman, Arctic Cooling, OCZ and Evercool.

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Old January 16th, 2009, 04:39 PM
Duvan Duvan is offline
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Connecting CPU fan/heatsink to chassis/extra fan connector?
If my mobo has a 4 pin connector for the CPU-fan... can I just plug it into a normal 3 pin fan connector? Will it still be able to alter the speed according to load?
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Old January 16th, 2009, 06:06 PM
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No, it will not. The CPU fan has a specific plug for that very purpose. If you connect it to a regular fan plug, it will treat it as such. All the fans do is draw power, there's no data sent between then, or any way for the computer to know anything about them.
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Old January 16th, 2009, 11:33 PM
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Ya, the fan will work, but it won't control it nor will it recognize it as the cpu fan.
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Old January 17th, 2009, 12:47 AM
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Also most motherboard will give you a constant, non-stop beeping on the internal speaker because as far as it know, the CPU fan is off and they do that so you know, and your CPU doesn't cook till it's dead.
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Old January 17th, 2009, 02:01 AM
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Ya some will, some won't.

Just about all of them will alert you somehow though, like some give you a warning on boot up that it is off.
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Old January 17th, 2009, 05:08 AM
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Okay thanks!

But you can use a 3-pin to 4-pin adapter to make it work in the 4-pin CPU connector, right?
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Old January 17th, 2009, 12:20 PM
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Quote:
Originally Posted by Duvan
Okay thanks!

But you can use a 3-pin to 4-pin adapter to make it work in the 4-pin CPU connector, right?


I think yes , if its not hand made

The 3 Pin plug haves ... +12 _ Ground _ Signal pin
About the 4 Pin one ... i do not know the use of the fourth pin.
It could be empty.
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