Help Needed (Cooling Problem)

Scotty-D

Scotty-D

Scotty-D

Associate
Joined
31 Oct 2010
Posts
83
Location
Birmingham, England
I have a question regarding this cable:

Akasa AK-CB423-ADPT 4 - 3pin adapter cable - Link

I currently have 5 of these fans:

Sharkoon Silent Eagle SE Modular 120mm Fan - Link

I will be using these 5 fans though this fan speed controller:

NZXT Sentry LX LCD Fan Controller - Link
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My question is will the cable above make my five fans work with a 3 pin fan controller? I am unsure of this as I'm not sure where the power is coming from, the 3 pin connector or the 4 pin molex. As a fan controllers normally feed the fans the electricity they need i don't want to blow the system.

I have on other question regarding the molex cables. When you have a set few with the PSU and apply 4 pin molex splitters how many can you use on one molex outlet from the PSU?
 
The power will be coming from the 4 pin molex, and it can support large amounts of fans (I've read up to 20 fans). The 3 pin allows tach adjusting/monitoring and does not supply any power at all.
 
Vinni3 @H|H said:
The power will be coming from the 4 pin molex, and it can support large amounts of fans (I've read up to 20 fans). The 3 pin allows tach adjusting/monitoring and does not supply any power at all.
Click to expand...

What supports 20 fans the cable or the controller? I thought the controller only supported 5 fans.
 
The power will come from wherever you connect it. The splitter you linked takes power from the 3 way connector and splits it to two Molex connectors. If you connect one of those Molex connectors to your PSU it will feed 12v to the fan and probably feed 12v to the motherboard as well, which wouldn't be a good idea.

I'd imagine the best way to control these is to use possibly modify the closed connectors on your controller so you can fit the 4 way connectors to them. You'll lose the PWM function but will still be able to voltage drop the fans. If you don't want to damage the connectors on the controller buy some simple 3 pin to 3 pin extenders and modify them.

Probably would have been easier if you had bought non PWM fans.

This is the normal PWM splitter which everyone uses to split the PWM signal from their motherboard. http://www.overclockers.co.uk/showproduct.php?prodid=CB-031-AK&groupid=701&catid=48&subcat=153

The controller is only good for 4W which is one fan.
 
Last edited:
If I was just to connect the fans direct to a molex splitter how my splitters can I have off one main 4 pin molex feeding from the PSU? I know there going to run at full speed all the time but i will be overclocking anyway so i would have had them cranked up ether way.
 
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