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Thread: MSI Z97 MPOWER MAX AC - Fans do not change their speed

  1. #1
    Xtreme Enthusiast
    Join Date
    Feb 2007
    Posts
    636

    MSI Z97 MPOWER MAX AC - Fans do not change their speed

    Just build an i7-4790K system with this board and have my NH-D14 two fans connected to the two CPU fan pins on the MB. I cannot get the smart fan feature in the BIOS to work with either of them; they only run at full throttle despite my adjusting the temp/RPM points. Has anyone with this board or a similar board gotten this feature to work? I should say that I know the fans are capable of running at other speeds because this is the same HSF I used in a different rig where they did work as expected.

    Thanks!

  2. #2
    Xtreme Enthusiast
    Join Date
    Feb 2007
    Posts
    636
    I studied the manual closely and it seems that the two CPU fan connectors expect the 4 pins to be:
    1) Ground
    2) +12V
    3) Sense
    4) Speed control

    The three SYS fan connectors expect the 4 pins to be:
    1) Ground
    2) Speed control
    3) Sense
    4) NC

    I hooked up my two CPU fans to the SYS headers and they behave as expected.

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