Will manually reducing water cooling fan speed damage the cooling system?

richbosworth

Honorable
Jun 28, 2012
16
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10,510
Hello,

I have recently purchased a Corsair H55 AiO water cooling system for my i7 920 (OC to 3.4) and have seen idle temperatures drop from 60-70°C (with an Antec Kuhler Box) to around 30°C.

The fan for the system is attached to a mobo chassis connector, with the pump/radiator attached to the CPU fan connector. There are also 2 other fans that are attached to the other 2 chasis fan connectors (one at the top as an exhaust and one at the front drawing air into the case).

With the old cooler, I used SpeedFan to reduce the speed of all fans, and therefore noise, when the processor was idle. The fans would then ramp up if the temperature reached the threshold (the auto setting in SpeedFan). I can understand how that would work with air cooling alone. I want to know if the same can be applied for my water cooling setup. I understand that some air flow is required, and as such I would keep the fans running at 50% speed (a good compromise - very little noise can be heard at this speed). However, I am worried that if I keep the SpeedFan settings as they are (except reducing the idle/danger temps to suit the water cooling setup) somehow the water cooling system will get damaged?

I would appreciate any other advice on this, including the minimum fan speed %, etc!

Thanks in advance,
Richard