Noctua NF-F12 iPPC-2000 PWM, Heavy Duty Cooling Fan, 4-Pin, 2000 RPM (120mm, Black)

The product I received was the IP52 version, although the wording made it seem like I was getting the IP67 version. These fans are very quiet, and move a ton of air. They are fairly heavy for fans, but it feels good to have a product that is actually built well.

If you are like me and are kinda new to PC building and come across this, just know these are quite loud when they are at full force but you dont even notice if you wear headphones, to be honest.

These fan do 2 things great push a lot of air and operate at quiet speeds if set correctly.

Both fans I ordered died after three months.

The product met my expectations

This is a very powerful and quiet fan. I dont know what everyone else is saying that its loud, its not. Best fan I have ever bought will not be buying anything but these ever again for my builds.

Good replacement for noisy Drobo 5D fan - this isnt silent but is noticeably quieter than the stock Sunon. This is probably the quietest fan that pushes enough air for the Drobo case.

My rig is about 10 years old - still working well but the fans on the CPU Cooler and a case fan were acting up. Replaced them each with one of these and I was surprised at how much noise the old fans were making. About all I can hear now is the airflow - these are a bit more expensive than some, but quality is worth the money.

Having installed three of these- one in the side with heavy filtration as an intake, and two more at the rear for exhaust -I can safely say that Noctua has absolutely nailed these fans (as, lets be honest, they always do). I recently made all three fans run at 70 percent at all times, unless temps get to above 55 degrees at which case they increase. At 70 percent, I can only hear these fans if Im standing right over my server, and in this case they sound very soft and not whiney at all- much better than stock server fans! The exhaust fans are at the back of my chassis, each behind their respective 4 disk hot swap bays. They draw the heat away from the disks extremely effectively. With all disks spun up in my hot apartment, these fans bring my disks below 45 degrees no problem. Changing my curve from 30 percent to 70 percent yielded a very favorable delta as well.

So quiet, love these!