how to hook up fans in a CM Storm Scout

[midnight growler]

I am planning on buying a CoolerMaster Storm Scout case with either a Gigabyte MA-790XT or Asus M4A78T-E motherboard. My dilemma is that each motherboard has only two chassis fan connections and I have three fans to plug in (front and top 140mms and a rear 120mm).

Normally the third fan could just be plugged into the power supply but, (please correct me if I'm wrong) the psu would just keep that last fan running at 100% all the time. Seeing as this would obviously increase noise, Id like to avoid it and stick with some sort of throttling as with the other two fans.

I assume that these are my options then:

1. use Speedfan to control 3rd fan manually.

2. install a fan controller (downside = cost)

3. split third fan in with one of the others (downside = might need more power than the motherboard connection can provide)

When Im not gaming, I'm usually just internet surfing or downloading (not folding) so it goes without saying that Id like a responsive cooling system.

Assuming that using the chassis fan connections is the best option after all, how should I configure them?

 

[Tullphan]

Just get a "Y" splitter & plug it into one of the headers. It won't hurt nothing. I've got 2 of those splitters on my motherboard w/no problems.

 

[zagood]

Should be able to split with no problem. Most OEM 140mm fans are right around 2w, and 120mm under 2w.

However, there's no guarantee that Speedfan will control the fans with no problem, so keep a fan controller as an option. Sunbeam Rheobus can be found for around $15.

 

[dc4517]

I am also using a Storm Scout case and when I was working through all the cabling, I noticed that all of the fans are connected to the PSU. None of them are connected to my motherboard. So I assume they are just running at 100%, right?

Should I just trace each cable from each fan, and plug them into my motherboard? Then the motherboard would manage the fan speeds?