3 pin fan connectors, on 4 pin PWM fan headers

#1 Posted by TDuiker (11626 posts) -

I am planning a new build, ad since i allready have a bunch of noctua NF-P12 fans, ive been wanting to use those. But i found out the Z87 sabertooth has PWM fan headers. So i ws wondering if i can connect 3 pin fans to PWM headers. And wheter i will still be able to control there speed by thermal throttling ?

#2 Edited by groowagon (2994 posts) -

yes you can use them. the connectors are designed to work with both 3-pin and 4-pin fans.

i don't think it's even possible to control the speed of 3-pin case fans. that's why the 4-pin PWM fans exist in the first place. i wouldn't worry about it. Noctua fans are silent (right?) so they might aswell operate on full speed all the time.

#3 Posted by PfizersaurusRex (807 posts) -

Since your fans are not PWM the only way to control their speed is by voltage regulation. There's a good chance Sabertooth has that feature, at least on some headers.

#4 Posted by TDuiker (11626 posts) -

I was going to get a corsair obsidian 900D, and a corsair H100i. The Noctua NF-P12 fans are still more silent then the stock fans i think.. If i want PWM control i would have to get 8X NF-F12 fans, since there slightly better then NF-P12, and have PWM.

#5 Edited by TDuiker (11626 posts) -

I Got this from the manual PDF for the Z87 Sabertooth

#6 Posted by PfizersaurusRex (807 posts) -

^^Looks like it'll work then. Unless it's just on paper. Now I'm wondering if my MB can do that as well. Would be nice to put 2 of them Corsair high airfow fans :).

#7 Posted by TDuiker (11626 posts) -


I guess that depends on what mobo you have ..

#8 Edited by TDuiker (11626 posts) -

I wonder it that dc power mode just goes for the cpu fan headers, or if that also includes the chassis fan headers.. Since it says cpu fan only, it says nothing about chassis fan headers.

Never mind it says Q-fan mode disabled/enabled on chassis fans later on

#9 Posted by PfizersaurusRex (807 posts) -

I definitely can't control my 3-pin fan with my MB, I just checked. Anyway I don't think Noctua fans will bother you even at full speed.