Neptwin Pull Noise

[00RaZoR11]

Greetings to everyone!

I'd be really happy if somebody could help me out.

 

On my deepcool neptwin cooler, no matter what fan I try (original, JetFlo, Arctic, Nexus real silent), it always makes a noise, which is really annoying, and I think, shouldn't be there.

I can't seem to find a way to reduce the noise my pulling fan does. I've tried every possible position and array, but it keeps on sounding like a 90mm fan (mine is a 120mm).

It's definitely turbulence, I'm sure of that one. The more air is moved, the louder the noise. When I put a pushing fan in the front, it gets louder. When only the front-most fan is installed, it's only wind.

The fins are probably not the problem, since the pushing fan doesn't make a sound (aside from wind noise).

So far, I've found out, that if I bend the towers further from each other, so the middle fan gets more room in front of it, the noise disappears, but I don't really want to make this drastical steps, like bending the pipes.

Reducing the fans' speed also helps, but that's a reduction in performance, which, of course I don't want.

 

Does every dual tower heatsink cooler have this kind of problem, or is it just deepcool (my Ice wind pro made noises like this too, when I put a high performance fan on the back of it)?

 

Thanks in advance.

[Rorgash]

you put loud fans on at full speed and complain about noise? 

[00RaZoR11]

The turbulence between the heatsink and the fan in pull is the problem.

The pushing fan is totally acceptable.

Anyways, I'm taking it back, and gonna try something else.