Can I change the case fan speed?

I have four case fans each with two wires (12v and ground), I have an adapter so they can be plugged into the 3 pin fan header on the motherboard. Now obviously the motherboard can't detect the rpm so it runs the fans at 12v all the time. My questions are is there a way to either get the motherboard to ignore the fan rpm and just adjust the voltage based on the system temperature or is there a way to manually set the voltage to the fans so I can reduce their speed?

Thanks for any help.
(I have a Gigabyte 970A-DS3)
5 answers Last reply
More about change case fan speed
  1. Asus has a program called FanXpert (something like that). It basically manages the case fan speeds for you based on temps as long as they are attached to the MoBo's case fan's ports. I'm not too sure about Gigabyte.
  2. What you are looking for is best provided in a fan controller. Something like this http://www.newegg.com/Product/Product.aspx?Item=N82E16811999171

    This fits into a 5.25" CD/DVD bay. You connect your case fans to the fan controller instead of the motherboard which allows you to control their speed by turning the knobs.

    Some also have LCD displays and temperature probes so you can monitor it better. Actually, here is one - http://www.newegg.com/Product/Product.aspx?Item=N82E16811992004
  3. 2 for 1 offer on posts!! Get it now before it's gone!
  4. casper1973 said:
    What you are looking for is best provided in a fan controller. Something like this http://www.newegg.com/Product/Product.aspx?Item=N82E16811999171

    This fits into a 5.25" CD/DVD bay. You connect your case fans to the fan controller instead of the motherboard which allows you to control their speed by turning the knobs.

    Some also have LCD displays and temperature probes so you can monitor it better. Actually, here is one - http://www.newegg.com/Product/Product.aspx?Item=N82E16811992004


    The problem with this is that if I spend that much on a controller I may as well just buy some better quality fans with either 3 or 4 pins so the mobo can control the speed. I was wondering if there was anyway to control the speed with my current set up.
  5. l0v3rboi said:
    Asus has a program called FanXpert (something like that). It basically manages the case fan speeds for you based on temps as long as they are attached to the MoBo's case fan's ports. I'm not too sure about Gigabyte.


    Gigabyte has Easytune but as it can't detect the fan speed it runs the fans at full speed anyway.
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