Speedfan is great and all but...

[DewgSauce]

for whatever reason it only works with 2 out of my 4 fans,

 

Why is this?

 

When i go in the bios i can alter all of them but not in speedfan, why is this. how do i change it

[IP man]

Are all of your fans 4 pin or 3 pin?

[DewgSauce]

2 are 3 pin and 2 are 4 pin, now that i think about it the two 4 pin fans are the ones which don't change...

 

 

To be fair i know they do work with speedfan because i used to have them working before i got 2 new fans

Edited February 26, 2015 by DewgSauce

[dfsdfgfkjsefoiqzemnd]

Perhaps your motherboard simply doesn't allow control over all channels.  On my MSI board both 4-pin headers can be controlled and the 3-pins don't.  It's that way in Speedfan as well as in the UEFI.

 

Another possibility is that the fans don't send an RPM pulse to the motherboard and it thinks that there are no fans installed.  In that case it'll just deliver full voltage.