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  1. #1
    ROG Enthusiast Array
    Join Date
    Oct 2016

    Z490 No PWM Control on my DDC 3.2 PWM Water pump

    I have No PWM Control on my DDC 3.2 PWM Water pump, using the PWM Water pump header.

    Currently stuck at 100% tried all other headers but it does the same. I have tried setting the upper , mid and lower temp and speed rating in the bios but it seems to ignore the upper and the mid but will accept lower 30% at 30c anything past that it will just go back to 100%. It is like there is two modes either run at 30% or 100% there is no variation or way to create a curve. This is the second pump I have tried of this make.

    Is there any know issue with PWM at the moment on Asus Z490 or am I missing a setting that I don't know about.
    I don't really want the pump at 100% when I run the computer in say silent mode.

  2. #2
    ROG Guru: Yellow Belt Array Ch3vr0n PC Specs
    Ch3vr0n PC Specs
    MotherboardAsus Maximus XI Formula
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    Ch3vr0n's Avatar
    Join Date
    Nov 2012

    That's exactly as it should be. The pump should ALWAYS be running at 100%, it's the FAN's that are PWM

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