Noctua NF-A14 PWM, Premium Quiet Fan, 4-Pin (140mm, Brown)

WAY TOO EXPENSIVE. Moves a lot of air, but not as much as Cougar fans....and Cougar fans are much more quiet and much cheaper.

Superior build quality. At high speed it does produce audible sound though discreetly so. But with being such a large fan I only need it to turn slowly to get the required CFM so I used the included speed reducing extension. Works great with my Motherboards fan speed controller.

Super quiet fan. No issues, just works

best cooler ever, very quiet

they are more quiet they do seem to produce more air by feeling it with your hand, i just installed them on a two day old rig we will see :)

Makes too much noise if turned up above 700 rpm (half max). 700 rpm is quite quiet, but above that sounds like a leer jet taking off. My stock 120 mm stock fans running at 1200 rpm are more quite and prob grant better airflow. Prob going to switch back out or go with those magnetic fans. might use these screws on something else and see if they work any better. Disappointed.

I love these fans. I replaced the stock fans from my fractal r5 case. At medium settings these run absolutely silent. I have a high end rig and even in the most intense of times the fans never need to spin up enough that it becomes audible in this case.

The thing is fantastically quiet! I installed this on a NZXT Kraken X40 radiator, and Im loving it. The fan is so quiet, I can hear the pump for the cooler!

The most wonderful (and UGLIEST) high performance fans EVER! Cant beat a 6 year warranty -- these people are serious about their products and I take them very seriously.

Been working very well so far as an exhaust fan in my PC build.