3 pin fan splitters

[TW]Fox · 24 Jan 2011 at 19:46

Hi,

If I connect 2 80mm fans to a single 3 pin header on the motherboard will the motherboard control both fans speed wise as if they were one?

Thanks

Steves1982 · 24 Jan 2011 at 19:55

As long as they are both the same fan then that's fine as long as the header is rated to supply enough power. Check the power specs for your fans and mobo header and make sure the header can handle 2.

Normally it's fine but best to check!

chaparral · 24 Jan 2011 at 20:02

Yes you can..

Right now am running two 92mm silentx fans from a single 3 pin motherboard header..
and yes i can control the speed of them..

Cookeh · 24 Jan 2011 at 21:16

As above, if its the same fan and the header can take the volts then it's fine and can be controlled.

[TW]Fox · 24 Jan 2011 at 21:25

Same fan is in two different fans but of the same make and model?

Frozennova · 24 Jan 2011 at 21:44

Makes no difference it will still control them however they will spin at different speeds and you'll only get the RPM of one fan, if your running the same model then they'll be running at the same speed anyway.

Bubo · 24 Jan 2011 at 23:35

If it was me I would only connect one of the yellow sense wires to the mobo header to remove the risk of conflicting speed pulses being seen by the mobo. Just snip the yellow wire of one of the fans.

Frozennova · 25 Jan 2011 at 01:07

Only one header on the splitter has an RPM wire anyway Bubo

Bubo · 25 Jan 2011 at 08:35

Cool. If someone was going to make their own soldered up splitter though, then you would want to do only use one of the sense wires, since he doesn't mention he is using a shop bought splitter and that. I would simply make one myself like.