Case Fans

Hey, I just bought a new case and im thinking about puting 3 or 4 case fans in there. There is going to be 2 in the back to bring in the cold air, and 1 fan on top to blow out the hot air. Then maybe 1 extra one in the front to do the same job as the other 2 fans with the cold air. So its basically 2-3 fans blowing air in (with filters to help prevent dust), and 1 fan to get the hot air out.

Basically what I want is 3 silent, but usfull fans for the ones bringing air in, and something a little more powerfull but still relativly quite to get hot air out.

Can you guys recomend me any case fans that will do the job? Can you give be the best deal and compare best dba (noise) to best cfm (air flow)?

[@$3.1415rin]

I have 2 Papst 4412 F2GL in my case, running @5V ... even at 7V you cannot hear them. Dunno about their air flow rate ... at least they are sufficient for my pc

[Pierre-Marie Baty]

hmmm well I've finally bought that NoiseBlocker S3 fan I was told was the best deal about dBa/cfm ratio, but actually it's not THAT noiseless... my CPU fan makes less noise that that (it's an Arctic Cooling Super Silent 2).

The good thing is that the NoiseBlocker comes with a potentiometer that enables you to slow it down a bit. And around 2000 rpm the noise level drops down to something very acceptable. It's however much more silent than any normal case fan.

And I like its color too... blue fan made of translucent plastic.. l33t

*edit*

here's a pic on how it looks like