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  1. #1
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    Issues with Ryujin 240 fans constantly spinning up full

    Hi there,

    Just this weekend built a 3800X system using the Crosshair VIII Hero board and the Ryujin 240. Love the way it looks, but I've been having a ton of trouble with the AIO. Basically - what will happen is upon boot up my system is nice and quiet, but then at random times, the CPU temp will spike over 65C and all of a sudden the AIO fans will shoot up to full and it's super annoying. 3-4 seconds later, it's back to quiet and the CPU temp shows 41C again. This just repeats over and over and over. I am not super familiar with how to tweak those complex graphs in the AI Suite software. Any suggestion for how I can get this to stay at a pretty silent level of noise without the fans constantly spinning up to full every so often? Just not familiar with what to do.

    I have the two fans on the radiator going into CPU_FAN and CPU_OPT on the motherboard, and the primary connector is going into AIO_PUMP. It's also pretty unclear which fan is which, I have something labeled CPU fan in FanXPert but there are also 2 different Ryujin listed. Wish they made this a little friendlier to figure out what was going on. Any help would be appreciated.

  2. #2
    ROG Guru: Brown Belt Array MrAgapiGC PC Specs
    MrAgapiGC PC Specs
    MotherboardAsus Maximus XI Code
    Processor9900K
    Memory (part number)CMK32GX4M4B3600C18
    Graphics Card #1STRIX-GTX1080ti-O8G-GAMING
    MonitorAOC AGON AG2701QX (2)
    Storage #1Samsung 960 EVO 256GB
    Storage #2Kingston Savage 500GB
    CPU CoolerNzxt X74 360mm AIO
    CaseNzxt H700
    Power SupplyEVGA 850 G2
    Keyboard Logitech G810
    Mouse Asus Spartha
    Headset Hyper X Cloud Revolver S
    Mouse Pad Hyper X Fury S 900mx420mm
    Headset/Speakers Logitech Z337
    OS Windows 10 64btis
    Network RouterTpLink Archer C9
    Accessory #1 EKWB FANs all of them
    MrAgapiGC's Avatar
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    is ok.
    I will recomend getting a pwm splitter so the cpu can do the same job.

    On bios, put the fans on turbo.

    On AI suite. there will 2 aios. 1 is the mini fan on the block and the other the fans itself. But since are conectected to the board, that is usesless. On the mini fan that can be control so find a resonable fix. Side these IS THE ONLY WAY to use the livedash and the aio correctly. all other funcions DOES NOT WORK AT ALL. that will give the info on the oled you need since the app DOES NOT DO ****. and that is good is working for you

    You can hitme on discord on ROG
    Learn, Play Enjoy!

  3. #3
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    In the AI Suite, is there any way to know which "AIO" is actually the tiny little pump fan? I think that is the one which constantly keeps spinning up and making this noise. I watched a review on Youtube and the guy mentioned the noisy pump fan, when he filmed it that was the same annoying high pitched noise I keep hearing. I would love to just disable this damn noisy fan.

  4. #4
    ROG Guru: Brown Belt Array MrAgapiGC PC Specs
    MrAgapiGC PC Specs
    MotherboardAsus Maximus XI Code
    Processor9900K
    Memory (part number)CMK32GX4M4B3600C18
    Graphics Card #1STRIX-GTX1080ti-O8G-GAMING
    MonitorAOC AGON AG2701QX (2)
    Storage #1Samsung 960 EVO 256GB
    Storage #2Kingston Savage 500GB
    CPU CoolerNzxt X74 360mm AIO
    CaseNzxt H700
    Power SupplyEVGA 850 G2
    Keyboard Logitech G810
    Mouse Asus Spartha
    Headset Hyper X Cloud Revolver S
    Mouse Pad Hyper X Fury S 900mx420mm
    Headset/Speakers Logitech Z337
    OS Windows 10 64btis
    Network RouterTpLink Archer C9
    Accessory #1 EKWB FANs all of them
    MrAgapiGC's Avatar
    Join Date
    Nov 2011
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    Quote Originally Posted by Zorn_ View Post
    In the AI Suite, is there any way to know which "AIO" is actually the tiny little pump fan? I think that is the one which constantly keeps spinning up and making this noise. I watched a review on Youtube and the guy mentioned the noisy pump fan, when he filmed it that was the same annoying high pitched noise I keep hearing. I would love to just disable this damn noisy fan.
    The small fan is the aio fan. and the main rad fans are aio fan 1
    Learn, Play Enjoy!

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