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PWM Fan Controller?

post #1 of 9
Thread Starter 
The background:
1 x 480mm rad push/pull
2 x 360mm rad push/pull
= 20 PWN fans
2 Swiftech 8W-PWM-SPL (contemplating a third depending on what I find out)
2 x 4-pin PWM headers on MB (I am stunned there aren't at least 3 for the type of MB - should have looked before plunking down the $)

The 480 rad fans can be plugged into one of the Swiftech splitters and plugged into the CPU PWM header.
The other header is on the bottom of the board. Two more splitters will fit perfectly hidden behind the back side of the front and bottom mounted 360 rads, or on the back side of the MB tray with good access to pass-throughs.

Does anyone know of a PWM fan controller that the two other Swiftech 8W-PWM-SPLs can be plugged into? then the idea is to plug controller into the other MB PWM header.

I know of the Zalman ZM-MFC-1, but it will accept one PWM device. The Zalman ZM-MFC-3 will also accept only one.

Ideas? Help? confused.gif
post #2 of 9
Here ya GO

Are you wanting TWO independent PWM input devices??

If so you may need to go 2 controllers.

Need more info, what fans are you planning on using? You don't need PWM fans on the PWM controller if I am not mistaken. The controller uses 3 pin fans and adjusts them from mobo. If you have 20 PWM fans you really wouldn't need the controller.
Edited by DaaQ - 7/14/13 at 7:03pm
post #3 of 9
Thread Starter 
Quote:
Are you wanting TWO independent PWM input devices?? Need more info, what fans are you planning on using? You don't need PWM fans on the PWM controller if I am not mistaken. The controller uses 3 pin fans and adjusts them from mobo. If you have 20 PWM fans you really wouldn't need the controller.

More info:
  1. No, I do not want two more independent control devices
  2. The fans are Akasa Piranha 120mm.
  3. I am looking for a means to "gather" the twelve fan connectors from the fans on the two 360mm radiators and use the PWM header at the bottom of the motherboard as a means of control. At that point I can use software to manually control, if necessary, rather than constantly adjusting 20 controller knobs to the right settings for the moment.

According to Swiftech some controllers work for this and some do not. I have an email into their support as well, but I thought someone here at OC.net may have run into this and had a solution or may have an idea, even if different, to solve it.

Thank you for your input. I will take a closer look at the controller you linked.
post #4 of 9
I think you might want something like this.

http://www.frozencpu.com/products/10350/

You can put some more splitters on the female PWM connectors since the entire thing is powered by your PSU and not your mobo.
It's pretty simple to do yourself if you dont want to buy the harness.

Three pin fans have 3/4 connectors (+), (-), and (signal). You can get away with only powering (+) (-), then the fans will run at full speed.
If you want to control the fans then all that needs to happen is you add the signal wire. You can split the three wires up meaning the (+) (-) go to the PSU and the signal goes to the mobo, but note that the signal going to the mobo needs to share the same ground as a "reference"

I hope that made some sense...

I say buy the splitter haha.

Like this
http://i7.photobucket.com/albums/y274/gglaesemann/df001schematic.jpg?t=1345828948

which is pinned out like this
http://cdn.overclock.net/3/3b/3bf1fcb0_vbattach198828.jpeg
Edited by InhumanSkills - 7/15/13 at 6:59am
post #5 of 9
Fan controllers use voltage not pwm, some might have 1 pwm header though. Best to just go with a pwm splitter off your mobo headers.
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post #6 of 9
Like others have said,



and SpeedFan. Then you're sorted.
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post #7 of 9
Thread Starter 
Quote:
Fan controllers use voltage not pwm, some might have 1 pwm header though.

Correct! Thank you mentioning it though as others reading this may not know that. thumb.gif
Quote:
Best to just go with a pwm splitter off your mobo headers.
Quote:
I think you might want something like this.
http://www.frozencpu.com/products/10350/
You can put some more splitters on the female PWM connectors since the entire thing is powered by your PSU and not your mobo.
It's pretty simple to do yourself if you dont want to buy the harness.
Quote:
Like others have said, http://www.overclock.net/content/type/61/id/1564215/ and SpeedFan. Then you're sorted.

Splitters were always an option. I was trying to see if maybe there were some other options that might reduce cabling, but I guess even if a controller had several PWM connections (or was even specifically made for boards short of PWM headers) it still would be a spaghetti bowl of wiring. I also was going to use Speed Fan wink.gif

Thank you all for the input. I appreciate you taking the time.
post #8 of 9
Putting a Swiftech splitter on the end of each radiator is going to be the least spaghetti. I think you should definitely get a third one.
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post #9 of 9
Thread Starter 
All over it already! Third splitter on the way. Swiftech assures me chaining will be fine; their product will work. I am just camping on my rather large front porch-deck-landing strip waiting impatiently on the mailperson! I do love me some Priority Mail! biggrin.gif
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