Disadvantage of fan splitter?

[jonapap]

I need to connect two fan on one pin on my motherboard. I looked and this look like a good option. I was wandering, is there any disadvantages to using a fan splitter? Also, would I be better to go with a fan controller?

 

[AKThomsen]

It depends on what you want to do. If you just want to run two fans with PWM from the same header, this is what you want to do (Preferably these should be identical, but you can also run two different fans as well as a PWM fan and a 2/3-pin fan).
The only problem you will encounter is if you run two or more high performance fans off the same header, you might burn it out. Usually this isn't a concern since most headers are able to deliver around 10W which is more than enough for two normal fans or even LED.
I would not go with a fan controller since it is more expensive and more work. And you get about the same result. But it depends on how much you want to be able to tweak the settings.

 

[cin19]

The disadvantages are 1) two fans will spin at the same speed. 2) like other member said they ( two fans) may kill the MB if the total power they draw over 1Amp (12W).

And what is the fan spec and your MB? Usually the fan header can only output 1Amp or 12W power. If two fans draw less than 1Amp(12W) you are fine in most time. Most of MB does not put it on the manual, some of them do, I check some of ASUS MB manual, like Z87-A or Rampage Extreme IV X79, also it is only for the cpu_fan header too, but I believe that will apply for other fan header. Check the page 1-34 from asus Z87-a http://dlcdnet.asus.com/pub/ASUS/mb/LGA1150/Z87-A/E7828_Z87-A.pdf

Most of ATX format MB has 3 or 4 or more fan header, I recommend use one fan header for one fan. I add the link for other member who got the problem for the fan header. http://www.tomshardware.com/answers/id-2770836/brand-case-fans-killed-mbo.html

 

[jonapap]

I don't have a lot of time this evening to look in the motherboard specifications for the fans, maybe tomorrow. Anyway, here is my build: http://ca.pcpartpicker.com/p/xWKrjX

Edit: I would use two of the case fan of this build

 

[jonapap]

I looked and the fan draw 0.1A. So I should be ok? The motherboard spec don't say anything.

 

[AKThomsen]

I looked and the fan draw 0.1A. So I should be ok? The motherboard spec don't say anything.

Then you should be fine. Good luck with it!