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will 3 pin fans run full speed on 4 pin mobo

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  • Speed
  • Components
Last response: in Components
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August 22, 2014 5:28:08 PM

i know the fans will work, but will they run full speed constantly as if plugged into the psu or will they run full speed only when the mobo turns them on. thanks.

More about : pin fans run full speed pin mobo

August 22, 2014 5:30:27 PM

When plugged into the PSU, the speed is 100% constant, but when fans are in the mobo the mobo can regulate the speed at their will.
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August 22, 2014 5:32:23 PM

if thats the case, is the forth pin just for pmw fans.
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August 22, 2014 5:36:39 PM

3 pin fans run at full , 4 pin fans with PWM can be controlled.

http://www.tomshardware.com/forum/340825-28-case-fans-4...
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August 22, 2014 5:41:21 PM

It will depend on whether the motherboard supports fan control via voltage or not.
Yes, 4th pin is the pwm signal.
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August 22, 2014 5:47:10 PM

thanks, to all, not sure if my mobo supports fan control, guess ill find out tomorrow when i swap everything to new case
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