Your favorite 140mm case fan?

[frldyz]

Just curious to hear what everyones favorite 140mm case fan is? SP and AF.

Also what dB does it run @. And can you hear that from outside the case when the case is closed?

Im looking to add an extra 140mm fan in the case for more AirFlow. But I don't want it to be too loud. Ive read that 15dB can be heard outside the case. I also read that 25dB cannot be heard from outside the case?

 

[BikerEcho]

I have the corsair AF140. They are great.
Some other good cooling brands are noctua and "be quiet" (as they are called).
I have had some coolermaster fans as well. Not as good as the once i have now, but they where just stuck fans in my CM HAF case. Pretty good, but not nearly as good as the corsair AF fans.