how does one make the fans run in push/pull config

[SilthDraeth]

I want to add a 2nd 120mm fan to my heatsink. It looks like the wired connector that goes to the moboard will only plug in, in one direction, and if I put the fan on backwards, it looks like part of it would rub against the heatsink, am I suppose to reverse the wire leads going into the plug, or what?

 

[error8]

I didn't understand what you've said, but, if you want to do a push-and pull configuration, you have to use two identical fans. One of them will be inserted in the mobo plug, the other one will have its red and black wires soldered to the first ones ( yellow should be cut off), that way you'll be using one connector and one rpm for both of them.

 

[MichaelD]

Originally posted by: error8
I didn't understand what you've said, but, if you want to do a push-and pull configuration, you have to use two identical fans. One of them will be inserted in the mobo plug, the other one will have its red and black wires soldered to the first ones ( yellow should be cut off), that way you'll be using one connector and one rpm for both of them.

Yes, and you will have one fan on each side of your heatsink. Both fans blowing the same way. Like this: (<<--represents direction of airflow)


<<--fanHSfan<---

 

[SilthDraeth]

Ok. Thank you.

 

[aigomorla]

push pull means what micheal just said.

but an easier definition would be sandwitching your cooling sink between 2 fans.

So one fan techincally pulls air, while the other pushes. hence push/pull.

My Radiator is an example:
http://i125.photobucket.com/al...aigomorla/IMG_0704.jpg

 

[VinDSL]

Originally posted by: error8
(I)f you want to do a push-and pull configuration, you have to use two identical fans...

Not necessarily!

The Tuniq T-120, Scythe Mine, and Asus Silent Square are examples of single fan, push-pull coolers! 😉

 

[error8]

Originally posted by: VinDSL

Originally posted by: error8
(I)f you want to do a push-and pull configuration, you have to use two identical fans...

Not necessarily!

The Tuniq T-120, Scythe Mine, and Asus Silent Square are examples of single fan, push-pull coolers! 😉

Yes they are, but he is referring on using 2 fans. So, those would have to be identical.

 

[Rudy Toody]

Originally posted by: error8
Yes they are, but he is referring on using 2 fans. So, those would have to be identical.

In 2 previous builds, I used the stock case fans (Antec) to pull and Sunon fans to push. I'm currently planning 2 more builds doing the same thing.

What is the downside to doing it this way? It seemed to do ok last time.

 

[VinDSL]

Exactly!

Why would you need two identical fans? It isn't rocket science!

Hardly any air passes through a CPU cooler anyway!!! They are mostly just noise makers, with the blades slapping the air... NOT moving it!

Stick your hand behind a CPU cooler with the fan running WFO - any cooler, any fan combination - and tell me if you can *feel* any air coming out...

And, be honest! 😉

 

[error8]

The idea behind push and pull, is that you use two fans, with low rpm instead of one with high rpm and have the same performance. The cooling performance doesn't increase that much anyway, even if you use two high speed fans, you scrape of 2-3 degrees and nothing more. But when you're overclocking to the limits, those could make a difference.

I don't understand what you're saying VinDSL. If your cooler has an 800 rpm fan on it, of course you can't feel too much air going through, but with 3000 rpm fan like mine, believe me, I can feel the hurricane at the back of the heatsink. 😛