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Fan Controller Help

post #1 of 13
Thread Starter 
So I finally got my hands on some GT D15. Was going to put 6 of them in push pull on my RS360, wondering whats a good fan controller

Would like to keep it cheaper is possible

Also do I want to hook up all 6 fans to the same controller and how do i do that, or do i want to hook the push and pull separately or every fan separately
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post #2 of 13
If you get a 6 channel fan controller, they'll all operate on different rheostats (control dials) so you can crak them as desired. I would always recommend getting a PWM controlled module, so you can have your motherboard control them as needed.

The cheapest thing to do is just to run them with a molex adapter off of your power supply. Shouldn't cost more than $5-10 for enough adapters. The better option would be to buy a fan controller to that you can control their speeds, if for whatever reason you want to turn them down. Buying a used one for cheap is a great option (If you want one, I happen to have an extra )

Whatever you do, you want the fans on each side of the radiator to be operating at the same speed, otherwise one side will be fighting against the other.

Do you know whether push-pull will make much of a difference on the RS radiator series? It would surprise me if it made a big difference, since lower FPI radiators don't benefit much from doubling of fans I don't think.
post #3 of 13
Since GTs are super efficient, you can get away with hooking them up to something meek like the scythe ace with 4 10w channels, or you can get a sunbeam rheobus with 6 30w channels which is overkill but nice to have. 1800 rpm GTs only draw about 1 W each.
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post #4 of 13
you might want to get a sunbeam rheosmart, it allows for pwm control of each channel and you can put all 6 fans on one channel
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post #5 of 13
http://www.nzxt.com/new/products/fan_control/sentry_2

NZXT Sentry 2. Has auto features and warnings. You can even shut the units lights off.
I know its not as cheap as possible, but it is affordable.
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post #6 of 13
Thread Starter 
so what im reading is that either group all the fans together, or in push pull pair?

also seems like the cheapest why would be to daisy chain them with molex connectors for power and the pwms to the motherboard?

thanks for the replies
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post #7 of 13
Quote:
Originally Posted by mrmullet34 View Post
so what im reading is that either group all the fans together, or in push pull pair?

also seems like the cheapest why would be to daisy chain them with molex connectors for power and the pwms to the motherboard?

thanks for the replies
You can't daisy chain them through molex and PWM to the motherboard... Those are two different options. The GT-15s don't support PWM, you'd need a PWM controller in between the fans and the motherboard header (you'd want a 6-fan controller, as a single fan controller won't work for that situation, and if it does, runs the risk of A. burning out the header, or B. burning itself out). If you want to daisy chain via molex, that's easy and cheap, but the fans will run 100% 24/7. If you get a controller, you can set how fast you want them to run at, and get power from a molex. If you get the Sunbeamtech Rheobus 6, you can let them adjust automatically through PWM, and have them powered by a molex, plus you can manually change the fan speeds if desired.

Also, I don't know what you mean by "group them all together or in push pull?" You would run 3 on one side, or 3 on each side. Those are the two choices. Either way, you'd ideally want them all running at the same speed together.

(aside: ugh, I hate to sound like a marketing rep for Sunbeamtech, I just haven't found another controller that supports PWM. Apologies for sounding like I have a stake in which company you buy from.)
post #8 of 13
Quote:
Originally Posted by Dr.GumbyM.D. View Post
You can't daisy chain them through molex and PWM to the motherboard... Those are two different options. The GT-15s don't support PWM, you'd need a PWM controller in between the fans and the motherboard header (you'd want a 6-fan controller, as a single fan controller won't work for that situation, and if it does, runs the risk of A. burning out the header, or B. burning itself out). If you want to daisy chain via molex, that's easy and cheap, but the fans will run 100% 24/7. If you get a controller, you can set how fast you want them to run at, and get power from a molex. If you get the Sunbeamtech Rheobus 6, you can let them adjust automatically through PWM, and have them powered by a molex, plus you can manually change the fan speeds if desired.

Also, I don't know what you mean by "group them all together or in push pull?" You would run 3 on one side, or 3 on each side. Those are the two choices. Either way, you'd ideally want them all running at the same speed together.

(aside: ugh, I hate to sound like a marketing rep for Sunbeamtech, I just haven't found another controller that supports PWM. Apologies for sounding like I have a stake in which company you buy from.)
since they are low amperage .083a with a pci slot rheosmart fan controller(20w=1.6amps) you can have six 0.27amp fans on it without a problem, just split them, it'll adjust the fans according to the pwm signal

and you can split them into 3 groups, position 1 both sides of the rad, position 2 both sides of the rad and position 3 both sides of the rad, but i agree run them all at the same speed

something like these
http://www.frozencpu.com/products/12...?tl=g47c17s424 splitter
http://www.frozencpu.com/products/12...?tl=g47c17s239 fan controller
Edited by somebadlemonade - 4/25/11 at 5:16pm
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post #9 of 13
Thread Starter 
sorry im not being very clear, what i ment by daisy chain was to use these molex adapter that came with the fan. it looks like it has a pin that comes off to attach to the motherboard
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post #10 of 13
The single pin adapter is usually just so that your mobo can see the RPM. It likely won't control it or anything like that. Kinda pointless really, but they include it since it's a "feature." Just take a look and see if it's a single yellow strand. If it is, it's RPM. If it's a green and blue with a 4 pin adapter, it'll control it. To my knowledge GT AP-15s don't have PWM, so it's definitely just an RPM sensor, to deliver that "warm and fuzzy feeling" so that you can have your motherboard scream at you if the fan isn't running for whatever reason.
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