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Daisy Chaining Fans!

#1 User is offline   Judd 

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Posted 29 March 2011 - 08:27 PM

Hello, havent made a post here in a while. All im wondering is how many fans can i "daisy chain" off a 4 pin molex (this may be a wrong term)
Because my mobo has only enough 3pin connectors to run 2 fans, i need to run 5/6, how would i get around this?
I dont wish to buy my new case,fans,psu, without knowing that i may need a new mobo?


#2 User is offline   waldojim 

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Posted 30 March 2011 - 02:14 PM

i have run 4 fans on one connector. I dont think you are likely to draw enough power to cause any issues.
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#3 User is offline   LiveBrianD 

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Posted 30 March 2011 - 04:19 PM

A fan likely draws 2-4 watts. For comparison, I think a HD uses 7-10 watts. I'm sure several fans on one connector is fine.

Also, I made a fan thing (external, with a 12V DC adapter) with 7 fans (6 80mm, 1 120mm) and they're all connected in parallel with one wire, which isn't particularly thick. It runs perfectly fine.
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#4 User is offline   TerminatingZero 

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Posted 07 July 2011 - 08:41 AM

My friend informed me of the idea of using a fan controler to split the molex into the same 3 pin set up that is on the mobo. I'm totally thinking about getting one for my case.

#5 User is offline   crazy4laptops 

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Posted 07 July 2011 - 10:05 AM

Molex is the right term... But yeah fans don't pull much current at all like LiveBrian said.
Most 12V rails can support 3-4 hard drives on one Molex daisy chain. Fans only pull about 10% the power of a hard drive so you're fine!
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