Do I need a fan controller?

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Rocket_Man

Rocket_Man

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Aug 10, 2015
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I have an XSPC AX360 radiator (and custom liquid cooling system) with 6 Cougar Vortex PWM fans. I have made 2 of my own 3-way Y-cables, with all four pins going to one fan and the other two fans getting just the positive and ground pins. The four female pins lead to the CPU and CPU_OPT headers on my Asus Z97-A. I'm fine with the temps that I am getting: 60-65 under full load at 5.1 GHz for my i7-4790k and around 30-35 for both my 960s in SLI. Yes, I know 960s in SLI, but I got one and then a friend gave me his because he wanted a 970 instead and didn't want to go to the trouble of selling it. And yes, I know the 960s don't need to be cooled but I'm a showoff and it looks good. Anyways, do I need a fan controller for my fans?
 
Solution
JackNaylorPE
I would have suggested a Fan PCB as a much more elegant solution ..

http://www.swiftech.com/8-waypwmsplitter.aspx

You didn't connect the speed control wire ? With just 2 pins, there's no speed control.

http://pinoutsguide.com/Motherboard/mb_pwm_fan_pinout.shtml

The wire you want to cut is # 3, 4 is the speed control ... see Swiftech diagram also.

Cougar doesn't publish electrical characteristics, but a typical 1500 rpm draw about 0.2 - 0.25 amps. You won't overload your headers (typically 1 amp on Asus low - mid tier boards) with 3 on each header but you also won't have speed control. With the Swiftech PCB, you only need 1 header and it will properly / safely control all 6 fans with a lot less cable mess.



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JackNaylorPE

JackNaylorPE

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Oct 30, 2004
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I would have suggested a Fan PCB as a much more elegant solution ..

http://www.swiftech.com/8-waypwmsplitter.aspx

You didn't connect the speed control wire ? With just 2 pins, there's no speed control.

http://pinoutsguide.com/Motherboard/mb_pwm_fan_pinout.shtml

The wire you want to cut is # 3, 4 is the speed control ... see Swiftech diagram also.

Cougar doesn't publish electrical characteristics, but a typical 1500 rpm draw about 0.2 - 0.25 amps. You won't overload your headers (typically 1 amp on Asus low - mid tier boards) with 3 on each header but you also won't have speed control. With the Swiftech PCB, you only need 1 header and it will properly / safely control all 6 fans with a lot less cable mess.



 
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