Noctua NF-A14 iPPC-2000 PWM, Heavy Duty Cooling Fan, 4-Pin, 2000 RPM (140mm, Black)

Very loud whisper/buzzing noise from Motor. I bought 4 for my case, I have them wired into a PWM splitter and every single one makes the same identical buzzing sound. You can hear it from about 3 feet away even. I have them set up for 1115 rpm lowest and they go up from there. The noise kicks in at about 1000RPM. I was expecting quality with these 30$ fans, the air flow is excellent, but its this buzzing sound that each fan makes. As A test I put my old corsair PWM fans that came with my h110 and no hissing. Only when these are installed I hear hissing sounds. Get noiseblockers instead

These are definitely industrial fans. Fast and loud, they move a lot of air. I put these on some corsair AIO radiators in a pull config and the temps are really good. But, the noise is high due to that airflow - just be warned. Not marking them down as they are doing what they were designed to do.

I had heard a lot of good things about these fans. They are Solidly built, they do perform very well. I had to doc these fans some stars for noise. They are very loud. Much louder than they what is stated, but I wanted the best performance for my money, so I will stick with these.

Possibly the best fan you could ever own. Quiet with normal usage, but when cranked up the amazing performance more than offsets the slight noise.

Very quiet, undervolts phenomenally well, great performance (airflow and static pressure), probably the best computer fan bearing in existence.

What a great fan. It has plenty of pressure and cooling capacity. It will outperform almost any fan at any given speed. Yes, its quiet too.

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

Ive purchased Noctua products in the past and generally have been happy with what Ive received. I bought 2 of these for a new computer case since I was replacing an aging Thor v2. The first one I opened was packaged right (fan cable was wrapped around and tucked into the bottom of the box), while the second was not. The second was backwards and the wire was just laying on top. Not that big a deal, but I guess I was expecting a better packaged product. Also, only one of the fans came with mounting screws. Again, not a huge deal but consistency would be nice. Overall, theyre nice fans. They are not quiet once nearing full speed, but I knew this going in so it was no surprise.

The best fans on the market. If you are looking for a silent fan that will last for years this is it.

Great fan, it moves a LOT of air.