Noctua NF-B9 redux-1600 PWM, High Performance Cooling Fan, 4-Pin, 1600 RPM

This is the type of fan I've been needing to completely silence my PC, which is an HP Omen 30L. Using this as the back exhaust fan, it felt like the last piece I needed to completely quiet all the fans without sacrificing air flow/pressure. I've always heard non-stop amazing things about Noctua and it leaves a big impression with just one product to completely submit to their fans.As an Omen owner, air flow can be a problem that can be solved with fan replacements, so I went through a lot of them to replace all the fans. To save you the trouble, all the noise it once made at max speed was silenced in the end, which is very well worth the investment. The last thing I had to find was a 92mm size that replaced the rear exhaust, but completely better. Before this NF-B9 REDUX, I picked up the Noctua Slim NF-A9 and it did its purpose well enough, but invited a high motor-type humming noise that concerned me. So I returned that and was aimed at this fan next; it was the one fan I've been searching for! Excellent air flowing out the back, perfect speeds without the irritating noise, and easy plug-and-play installation. I pushed the fan setup to max speed and only heard the air flowing throughout the PC. The color scheme does make it stick out like a sore-thumb but if it's quality over cosmetics, then I am not complaining about it. If you have an Omen too, or just looking to solve some noise complaints on your builds, Noctua sells the ones we're looking for! Best all around performing products.

Bought this for a HP omen 30L tower.The rear exhaust fan.Firstly the original fan seemed to work fine for about 2 years. It was loud when it kicked up but I assumed (incorrectly) that a replacement wouldn't be that much different in noise.A few days before buying I was having issues that I thought were signs of a GPU failure. After playing any game, my PC would crash. I checked temps and everything was in the safe levels. Still not 100% sure what exactly was the issue. But I had noticed that I had not heard the loud fan ramp up for a few days and thought maybe issue was related (after ruling out GPU failure).Replacing the fan fixed the issue with the PC crashing. I am guessing it's some Fail-Safe mechanism. And since the fan is 4pin, the PC would have "feedback" about the fan functionality and since it was not working properly (but was still turning ...??) the PC would shut down after any heavy load.Just wanted to share this story because I never have encountered this before. Fan either comes on or doesn't. Not comes on but won't ramp up.Anywho. This Nocturna fan is the correct specs for the PC I listed. And it's crazy how quiet it is. At first I worried the fan issue was a motherboard problem because the new one never "ramped up" either. But it did. It just doesn't sound like a leaf blower.10/10 would buy again and wish I had bought it 2 years ago.

Used this as a replacement for a noisy front fan in my Lenovo P520. It's quiet, looks great and performs like a Noctua champ!

Upgraded the fans in my gaming PC, these work for both 3 and 4 pin systems, you just don't get the controllability if you use for a 3 pin, but luckily my computer BIOS allows control on a 3 pin, very quiet, and well built, best fans I've ever used