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What is the most powerful 120mm Fan?

post #1 of 14
Thread Starter 
Yup, i know what you're going to say.

Delta's.

I own some, and i used to run them off a fan controller. Now i see no reason to use a fan controller when - with a bit of effort from devs - we could have them software controlled. Basically, i think fan controllers are primitive and unecessary.

So, other then Deltas, what's the most powerful 120mm fan you can buy? (and OPERATE via the 3 pin mobo headers)

Replies much appreciated

PS-

In case anyone asks: i don't recommend anyone try and run a delta via the motherboard headers, i'm sure others will explain why
post #2 of 14
Quote:
Originally Posted by Thingamajig;13687767 
Yup, i know what you're going to say.

Delta's.

I own some, and i used to run them off a fan controller. Now i see no reason to use a fan controller when - with a bit of effort from devs - we could have them software controlled. Basically, i think fan controllers are primitive and unecessary.

So, other then Deltas, what's the most powerful 120mm fan you can buy? (and OPERATE via the 3 pin mobo headers)

Replies much appreciated

PS-

In case anyone asks: i don't recommend anyone try and run a delta via the motherboard headers, i'm sure others will explain why

The problem is, there is no standard on what is the max for a fan header.
So to be honest, that kind of question is really hard to answer since it varies between motherboard manufacturer.
post #3 of 14
The most powerful fan that can used "safely" on a 3-pin MB fan header depends on how much power the header supplies. A typical consumer grade MB will supply around 1a or 12W of power. Like mbudden said, it varies between MB mfgs.
post #4 of 14
Quote:
In case anyone asks: i don't recommend anyone try and run a delta via the motherboard headers, i'm sure others will explain why

Why, what will happen?
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post #5 of 14
Have a look at the Scythe GT AP-31's.

Manufacturer's specs:
5400 RPM
150.1 CFM
50.5 dBa
1.14A @ 12V = 13.68W (might or might not run off your mobo's fan header)

They come with a Molex power and a 3-pin RPM plug, so they are not really designed to be run off the mobo.
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post #6 of 14
Ok well first off if your fan draws too much power you will blow the headers.

Now, if you have a PWM Case fan you can power 12v from your molex while still using the PWM wires going into your MB. That's what i currently do with my Nidec. I don't know if this same thing will work with 3pin. Doubt it because i think 3pin works by changing voltages on the board.

I found that a fan controller is the easiest way to go, besides PWM on the MB.
    
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post #7 of 14
Quote:
Originally Posted by Captain1337;13688207 
Why, what will happen?

You might burn the headers off. But ehume said that just check the specs on the header and you should be all good.

There's Papst, San Ace, Panaflo, and Scythe GT that offer powerful fans.

I prefer fan controllers, it gives me the ability to fine tune the speed and noise level that I want. Plus, it looks nic3. thumb.gif
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post #8 of 14
I got a few Papst 4212nh/nhh which do 105/120 cfm respectively, and both draw less than 10 watts. I safely stuck a pair of these on one of my motherboards fan headers until I got tired of the noise. (24watts/channel manufacturer spec)

By that spec, I could safely stick some Papst 5212nhh fans on my motherboard. Those are specced at:
Air Flow: 200 CFM
Noise: 58 dBA
Speed: 4900 RPM
Power Rating: 19 W
Quote:
Originally Posted by iCrap;13688727 
Now, if you have a PWM Case fan you can power 12v from your molex while still using the PWM wires going into your MB.

This works okay? I was wondering if I could do this for a gpu cooling fan, but I have never heard a mention of this.
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post #9 of 14
did someone mention something about the MOST powerful 120mm fan? biggrin.gif

[ame="http://www.youtube.com/watch?v=XDf1IrR6BqY"]http://www.youtube.com/watch?v=XDf1IrR6BqY[/ame]

well i'm not sure if it's THE most powerful, but I'm sure it comes close:p
post #10 of 14
Most powerful 120mm fan (excluding the compound beasts like the one in the post above)...

[ame]http://www.youtube.com/watch?v=B4sUvnvooAY[/ame]

There simply is no 120x120x38 fan out there that will push more air than this thing.

Sure; there are 120x120x38 fans that will do more than 260CFM (not many though), but none of those will have the static pressure that this beast puts out (520PA or 2.09in H20). biggrin.gif
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