Daisy Chain fans

Mr_bumpy · 05-04-2009, 03:51 PM

Hey,

I just had a question about fans. I'm building a custom fan speed controller. The question I have is how many fan's can I safely run off of a single +12v connector?

The setup is a single 12V molex connector into the controller, which splits into 6 potentiometers, and each dial controls 2 fans, equalling a total of 12 possible fans. If it matters, they'd all be 120mm noctuna fans, plus two 240mm cooler master fans (stock with case).

I'd like to ask that you answer the first question instead of just telling me to add more power. I've had people tell me to add more, but no one has given me a why.

Thanks in advance.

**grimx133** · 05-07-2009, 01:28 AM

Happened to have a Noctua NF-S12 in arms reach, it uses 1.44 watts. You can run as many fans as fit in your case from a molex.

sethy666 · 05-10-2009, 10:02 PM

What Grimx said... just make sure your pots are rated to handle that load. Last thing you need is another big heat source :)

05-04-2009, 03:51 PM	#1 (permalink)
Mr_bumpy Registered User Join Date: Sep 2005 Posts: 34 OS: winxp pro	Daisy Chain fans Hey, I just had a question about fans. I'm building a custom fan speed controller. The question I have is how many fan's can I safely run off of a single +12v connector? The setup is a single 12V molex connector into the controller, which splits into 6 potentiometers, and each dial controls 2 fans, equalling a total of 12 possible fans. If it matters, they'd all be 120mm noctuna fans, plus two 240mm cooler master fans (stock with case). I'd like to ask that you answer the first question instead of just telling me to add more power. I've had people tell me to add more, but no one has given me a why. Thanks in advance.

05-07-2009, 01:28 AM	#2 (permalink)
grimx133 Mentor Hardware Team Join Date: Jan 2008 Location: Canada eh Posts: 3,008 OS: xp mce sp2, xp pro sp2, windows 7 beta My System	Re: Daisy Chain fans Happened to have a Noctua NF-S12 in arms reach, it uses 1.44 watts. You can run as many fans as fit in your case from a molex. __________________

05-10-2009, 10:02 PM	#3 (permalink)
sethy666 Registered User Join Date: Feb 2008 Location: Sydney, Australia Posts: 123 OS: Windows Vista Home Premium SP1 My System	Re: Daisy Chain fans What Grimx said... just make sure your pots are rated to handle that load. Last thing you need is another big heat source :) __________________ Do YOU hear the voices too?!?