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Thread: Radiator fans, where do i plug them in?

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    Radiator fans, where do i plug them in?

    I'm looking into setting up my first custom loop, the only part i'm not too sure about is where to plug the fans. Do i have to have a fan controller (i'd rather not),straight from the PSU or use the headers on the motherboard?
    Any insight into this would be great.
    Thanks

    ps
    Planing on just cooling the CPU first with a 240 RAD, i will be adding a GPU into the loop later with another 120 RAD. (or is that overkill?)

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    Re: Radiator fans, where do i plug them in?

    Well you'd always want maximum performance so plug it to the PSU if that's what you're aiming for. But if you're a bit sensitive to the noise then go ahead and plug it to the motherboard, I'm not sure though but I think you're supposed to have a Y connector or similar or something like that, if you're not sure though you could just get a fan controller

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    Re: Radiator fans, where do i plug them in?

    Completely depends what fans. You'd want high static pressure fans with a decent amount of CFM. That way you can get enough airflow through the rad than you would with higher RPM fans. And of course the benefit is lower noise.

    What I'd suggest is run them off the board either way; most modern boards these days have voltage control (double check though) so 3-pin 4-pin (PWM) fans can be controlled. As I said double check though

    Check Amazon if you are considering PWM fans as you can get PWM splitters. Basically the GRND, +12 wires come from the PSU. The TAC and PWM are on the header for controlling it.
    Last edited by mikeo01; 22-05-2014 at 06:02 PM.
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    Re: Radiator fans, where do i plug them in?

    To start off, there is no "right" way to do it, it's dependent on how you want your setup and the components you are using.

    What fans? how many? what water cooling components? what do you want to achieve?

    There has been a long constant debate in water cooling circles as to if it's best to un the fans at a fixed speed and vary the pump speed, or run the pump at a fixed speed and vary the fan speed or to leave it all at a fixed speed.
    But a lot does come down to your setup and components.

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    Re: Radiator fans, where do i plug them in?

    Quote Originally Posted by Pob255 View Post
    To start off, there is no "right" way to do it, it's dependent on how you want your setup and the components you are using.

    What fans? how many? what water cooling components? what do you want to achieve?

    There has been a long constant debate in water cooling circles as to if it's best to un the fans at a fixed speed and vary the pump speed, or run the pump at a fixed speed and vary the fan speed or to leave it all at a fixed speed.
    But a lot does come down to your setup and components.
    i was going to use the sp 120 quiet edition fans (2 to start with) plus 3 case fans, i was planning on getting a XSPC kit with a D5 pump and 240 RAD and trying to achieve a pretty quiet rig

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    Re: Radiator fans, where do i plug them in?

    just connect the sp120's to the cpu headers on the motherboard. Then when the chip heats up the motherboard will up the fan speeds depending upon your settings.

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    Re: Radiator fans, where do i plug them in?

    If it's only two fans, just plug them into the CPU Header on the motherboard via a Y splitter, no need to worry about a fan controller yet

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