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  1. #1
    ROG Member Array
    Join Date
    Feb 2013
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    Extreme VIII fan control issues

    Hi Folks

    I've purchased 4 identical Noctua PWM fans and I ran the auto fan detection in the BIOS which has detected different min/max duty cycle settings for each fan, even though they are identical fans.

    How do I change the min/max duty cycle settings along with other advanced parameters. I can't seem to find a way to do it in either the BIOS or the Fan Xpert utility.

    Also, Fan Xpert isn't ramping the fans up to the specified line on the graph, it seems to be keeping the fan at a much lower RPM. Any ideas how to solve that issue too?

    Thanks very much

  2. #2
    ROG Guru: Grand Master Array
    Join Date
    Oct 2012
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    I'd just configure each of the fan curve in Fan Xpert instead of running the auto detection function.

  3. #3
    ROG Guru: White Belt Array Buellersdayoff PC Specs
    Buellersdayoff PC Specs
    MotherboardMaximus viii Hero
    ProcessorI7 7700k delidded 4.9ghz @ 1.4v
    Memory (part number)Corsair led 4x8gb 3200
    Graphics Card #1GTX 1080ti MSI Gaming X
    Sound CardOnboard + Hyperx usb
    MonitorAcer X34 Predator
    Storage #1Samsung 950pro nvme
    Storage #2Samsung 840 ssd + 2tb hdd
    CPU CoolerCryorig R1 Universal
    CaseThermaltake View 31 TG mesh front panel mod
    Power SupplyCorsair rm850x
    Keyboard G910
    Mouse G502
    Headset Hyper x cloud II
    Mouse Pad H440
    Headset/Speakers Edifier R1280t
    OS Win 10
    Network RouterNetgear x8 R8500

    Join Date
    Aug 2016
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    Here is what I found with my maximus viii gene... Run something like realbench and adjust your fans to suit your loads (asus motherboard uses a different cpu sensor reading) then record the settings and apply them in the bios. Fan tuning may need to wiped in bios first. Fan header three and four on my won't go to the actual minimum the fan is capable of. So I used a splitter off cpu and fan header two. Hwinfo64 core temp reads 25 idle and say 60 load whereas the the asus sensor reads 30 idle 50 load (approximate for me anyway) hence the reason why the fans won't ramp up to what you expected

    Edit; then uninstall ai suite
    Last edited by Buellersdayoff; 09-30-2016 at 04:47 AM.

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