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Controlling more than 2 fans with speedfan

post #1 of 7
Thread Starter 
I can't control my 3rd and 4th casefan. I tried to put them in different connectors but with speedfan it just doesnt work.

The mobo has 2, 3pin chassis fan connectors and 1 4pin chassis fan thingy.
There is also a powerfan connector. The fans are cm sickleflow with led.

It''s disturbing when I'm watching a film at night
Is it the mobo's limit? Any help would be nice. Thanks!
BTW I am thinking about to buy a fan controller, if this can't be helped.
Edited by aliteDC - 1/31/11 at 5:38am
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post #2 of 7
Hmm, that's odd.

Are you sure you plugged the fan you were testing into a port that could throttle with the previous fan? Make sure also in Speedfan under the Advanced tab in configuration that all the PWM's are set to Software Controlled. Btw the power fan connector cannot throttle, it's just a monitoring header for the fan in your power supply. Most psu's don't have that anymore though.
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post #3 of 7
Was always my assumption that you must have 4-pin connection to control fan speed via software. The fourth pin is the PWM (pulse width modulation).

I always had quiet case fans so havent needed to learn much in regards to this.

There are plenty of fan gurus around here though, just wait a while.
    
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post #4 of 7
Thread Starter 
Well I think it´s the connector because changing them didn´t help.
The other 2 fans I have are both 3pin so thought it would work,

Do you guys know any good 4pin fans? I could only find 3 to 4pin molex fans.
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post #5 of 7
I have 4 fan headers on my motherboard, but only two of them can be adjusted via SpeedFan. I suspect that may be the case with yours as well. If your mobo model has it's own specific thread on this site, you may want to ask others there.

Also, you do not need 4pin fans for SpeedFan to work. You can do one of two things to run two fans off of one header. 1) Use a Y adapter. 2) If the fans you're using have both 3pin and molex on the leads, then no adapter is necessary. This is how I run my two front intakes. 3pin from one fan to the mobo, then molex from the second fan to the molex on the first fan. Just make sure the current draw from both fans does not exceed the mobo spec(again this info can usually be found in the mobo's "official thread").
Edited by tmunn - 1/31/11 at 11:23pm
    
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post #6 of 7
get a fan controller, you don't need one of those fancy ones, but as long as you can control the fans you like (3+) it's really worth it.
post #7 of 7
Thread Starter 
I ordered some splitters. But the funny thing is when I start speedfan, the pc freezes instantly.
I'm now using oc tuner which came on the mobo's cd.

Thanks for the help guys!
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