Noctua NF-S12A FLX, Premium Quiet Fan, 3-Pin (120mm, Brown)

Great quality. The packaging was very high quality. I am not sure they are as silent as people make them out to be. I think most fans at 700rpm will be pretty quiet. Above 1000 rpm they are audible.

Excellent case fan. Longest lasting brand I have used.

The ugly duckling works is very quiet magic

As others mentioned, super quiet and works well. My stock one was too loud and this does what I wanted it to do. Thanks for making a great product!

This brand certainly lives up to its rep. The fan is very quiet. I had trouble installing it with the silicone knobs so I just used the regular screws instead and its still quiet.

Excellent quality. Grandiose packaging drives up price. Nicely quiet at 1200rpm, very quiet at 900rpm and silent at 700rpm. Moves more air than my previous Lian Li 1200rpm fans. Pricey, but if you want silence, get these.

Not very quite!

Lasted only a few weeks before the blades started making noise while turning and then it just quit. Probably a fluke so would buy again.

Insanely good performance! Very quiet, high airflow.

Just got these and they are wonderfully quiet. I got two fans to replace the two loud fans that I had already. While I really like how quiet it is, I have notice some changes in temps. To be fair, I put on the Low-Noise adapter on it so it isnt running at the full RPMs it can be. That being said Im only seeing 3-4 degrees higher overall while being nearly silent at about 800 RPMs while my other fans that I replaced were extremely loud and ran at 1500-1600 RPMs. I will take that ratio and If I really get fed up with the 3-4 degrees temp difference I will take off those adapters. The overall temps for the CPU is at the high end under moderate load 40-45 degrees Celsius. A lot of temp change in the CPU comes from the hot graphics card right under the CPU. This is with i7-2600K 3.4Ghz CPU and a Radeon HD 6950 video card (this card runs really hot, even under light/idle use).