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The corsair H100i cooler fans run at 2300+ RPM under linux. Unfortunately, Corsair Link, only works in Windows and lm-sensors / fancontrol do not recognize anything but the pump RPM meaning you can't control the speed of the fans.

How do you control the speed of the fans under linux?

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1 Answer 1

Corsair suggests that you connect the two fans to the control module via y-connecter. However, doing so under linux makes it impossible to control the fans and they will always run at 100% RPM.

If you connect the 2 fans to the motherboard (as chassis fans) you can control the fan speed as you normally would via lm-sensors and fancontrol (see: How to control fan speed?) , significantly reducing the sound level.

Connections would be as follows:

Fans x 2 -> Chassis Fan(s) on MOBO
Corsair Pump control -> CPU Fan on MOBO
USB > USB Header on MOBO

If you're not overclocking, the cooler unit is very unlikely to require management at all. For example, I have an i7-3930k running at stock frequency and the temps are staying between 32-40 at all times. Case is practically silent.

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