Corsair H100i fan speed not changing.

Discussion in 'General Hardware' started by StealBalls, Sep 29, 2013.

  1. StealBalls

    StealBalls Banned

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    Hi,

    with the default Corsair fans the speed would change with load as expected - but were horribly noisy.

    I replaced the fans with scythe fans which are so quiet it's lovely, however, they don't change speed no matter what I am doing, any ideas?


    cheers.
     
  2. IcE

    IcE Don Snow Staff Member

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    Are they 3 pin or 4 pin?
     
  3. lehtv

    lehtv Ancient Guru

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    What Scythe fans? Hard to really say anything if you only tell us the brand and not the model.
     
  4. StealBalls

    StealBalls Banned

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    Sorry.

    120mm 800rpm Scythe Glide Str3am 3 pin.

    I read a review where they seemed to have pretty awesome airflow for such quiet fans.

    Performance noise ratio.

    Not sure I would like to stress test with these fans much but, playing BF3 64 player caspian border I have one core which is far far hotter than the rest and that was 67 and the cooling is barely audible at all, in fact honestly, I don't even know if i cna hear it at all.

    So, as long as temps are safe, I would rather have quiet.

    Other cores were 62, 63, and 57.

    vcore is 1.22v


    EDIT on doing some more research defo looks like I need 4 pin fans for the pump to dynamically control fan speed, I actually don't know if my Scythe fans are running at full speed or not, if they are running at full speed they are near silent.
     
    Last edited: Sep 30, 2013

  5. IcE

    IcE Don Snow Staff Member

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    3 pins run at full speed unless you have a voltage controller connected somewhere. Since the H100i's controller is PWM based, I doubt it supports voltage control for 3 pin fans.
     
  6. lehtv

    lehtv Ancient Guru

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    At 800RPM they should definitely be almost silent, and I don't see why they wouldn't be running at full speed. There's a PWM version of the same fan available, the same one that is used in Scythe Mugen 4, for example.
     
  7. Greybeard

    Greybeard Active Member

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    Correct!
     

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