Fan speed controllers & how it all works...

BAD311

Member
Mar 18, 2009
88
0
0
So I want to understand something... Every site sells fan controllers... How do they work and are they automated? As in do they increase in RPM if the CPU sensor requests it or do they only do it when I adjust the knob(s) on the controller?

I would like a setup where every case fan adjusts automatically when the CPU sensor needs them to spin faster.

I'm imagining the CPU cooler unit (4-pin on mobo) has a wire that sends the sensor signal to the fan correct? Does this 4-pin run to the controller unit in the 5.25" bay and then all fans are routed into the controller? Pretty much the controller is a splitter?

I want a controller that I don't have to sit there and adjust, I want it to be automatic. Do controllers also show the CPU temp readout or anything else?

Any help would be appreciated. Going to start a new build in August and want to be aware of the little things :)

P.S. what are some good controllers to look into?

Thanks guys!
 

Zap

Elite Member
Oct 13, 1999
22,377
7
81
There are various kinds on the market. Some are semi-automated and come with thermistors (to detect temperature) on long wires so you can place them wherever you need. The most common and cheap kind are just simple knobs that you set to whatever you want.

If your motherboard supports it and has a bunch of fan headers, you can plug in all your fans to your motherboard and use software (such as Speedfan) to control the fans based on temperature.
 

BAD311

Member
Mar 18, 2009
88
0
0
Hey guys thanks for the info! After reading everything, investigating, etc... I went ahead and purchased a Corsair 600T Spec Edit (white case) with built-in fan cooling for 4 fans, which will be located on the side panel with the included mesh grill insert that is swappable with a clear insert. This way my case fans are all hooked into the mobo while the 4 side fans are adjusted when I need them.