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Can 3-pin fan headers control 3-pin fans?

Can they? And by what means? Voltage control? PWM?
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  1. Best answer
    Yes, but requires there be some mechanism for it, such as a setting in the BIOS that will control the 3-pin fan header. I would say, voltage level control, as all you have on a 3-pin fan are 1 voltage line, 1 ground line, and 1 tachometer line.
  2. bigpinkdragon286 said:
    Yes, but requires there be some mechanism for it, such as a setting in the BIOS that will control the 3-pin fan header. I would say, voltage level control, as all you have on a 3-pin fan are 1 voltage line, 1 ground line, and 1 tachometer line.


    How about the Asrock Z87 Extreme4's 3-pin headers? Can they control 3-pin fans?
  3. According to ASRock's website:

    http://www.asrock.com/mb/Intel/Z87%20Extreme4/

    "FAN-Tastic Tuning

    Configure different fan speeds for respective temperatures using the graph. The fans will automatically shift to the next speed level when the assigned temperature is met."

    Yes, it would appear that you can control the speed of your connected fans via software.
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