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Connecting cpu fan to power supply

hey guys i was wondering if the cpu fan would run full speed (2000 rpm) when connected to the power supply at all times. because i bought a cpu fan that had a 3 pin connector i cant plug it into my mobo header. because it has 4 pins. thanks
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More about connecting power supply
  1. You can plug it into your 4-pin, it has a ridge to help you align it to the power connector.
  2. so i CAN plug the 3 pin cpu fan to my 4 pin motherboard header? what is the extra pin there for then?
  3. PWM
  4. Best answer
    k3v1n_123 said:
    so i CAN plug the 3 pin cpu fan to my 4 pin motherboard header? what is the extra pin there for then?


    Yes,you can connect a 3 pin cpu fan to a 4 pin motherboard header.The fourth pin is for PWM. The PWM fan has the extra fourth pin, on which is sent a PWM control signal. The fan does the real work of reducing speed. They will work as normal 3-pin fans when reduced by linear voltage control.
  5. Best answer selected by k3v1n_123.
  6. This topic has been closed by Mousemonkey
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