Noctua NF-A6x25 PWM, Premium Quiet Fan, 4-Pin (60mm, Brown)

I like'em! (see pics) Got two for my pc (HP P7-1010) to get more air moving in there. Also bought one of the 40x40x20 little guys to get some air coming in the side vent on my tower. These things do not move very much air. But that's OK, it's all I could really do for my tower. And who cares about the color? I think they look awesome. If you want more air movement I would get the Bgears fans. Those things are about 50% more powerful than Nactua's. I know these fans are rated at 3000RPM, the Bgears I have are rated at 5000rpm and they destroy Nactua's fans. BUT! they're louder. Not annoyingly loud, but definitely noticeable. But cmon you can't spin at 5000rpm and be silent...If you look at the picture of my side panel you'll see what I did. My pc was bought all in one at Staples back in 2011. I've upgraded everything possible. Best cpu my mobo will take(AMD Phenom II X6 1065T 95watt)(32gb RAM Kingston Hyperx Fury)(2gb EVGA Nvidia GeForce gtx 750 Ti)(two Solid State Drives by Western Digital, a 500gb, and 1TB)(Seven USB 3.0 ports (pcie card))(an Antec A30 Heatsink fan)This thing is my baby. I know it's not a custom build. But I've had it for almost 10 years and it runs fine still. I can run almost any game as of 2020 without issue. Audio and Video editing (Pro Tools & Sony Vegas Pro HD) run flawlessly. I've turned a manufacturers system into a monster. And I hope to get another 10 years out of it. But I do plan on finally building my first custom build next year. Sorry for the rambling lol I don't know why I do this on reviews lolNactua is probably the best in quality. I recommend you buy these bad boys. Or whatever size you need. Get'em!

I used the Noctua NF-A6x25 PWM as a replacement for the noisy fan on my QNAP TS-212. The original fan had failed and I replaced it with a Delta AFB0612VHC also from Amazon which did not last six months before it started to make noise as well. Back then I had considered the Noctua fan but did not buy it because it was too thick -- the original fan was 0.6 inch thick and the Noctua fan is 1.0 inch thick. This time I decided to get the Noctua fan and try to make it fit. The fan could not be mounted inside the enclosure but came with four "anti-vibration mounts" made of silicone that allowed me to mount the fan outside the enclosure by just pulling the "anti-vibration mount" peg through the original fan screw holes. The fan is mounted outside the enclosure and is VERY QUIET and keeps the system cool. I had to drill a small hole on the plastic case to allow the fan wire to pass inside the enclosure. The QNAP is able to control fan speed automatically and the fan power and sensor match QNAP pin-out. I had bought the Delta fan because it was the same model as original fan but turned out to be junk. The Noctua fan is highly recommended by others so I expect it to last much longer than the Delta unit.

Excellent, high quality fan. Used it to replace the stock fan on the Corsair Airflow RAM cooler. A couple of zip ties required, but it works like a charm and is much quieter at higher speeds.

Silent at lower RPMs but gets relatively loud once you hit a certain breakpoint.

This little fan is extremely quiet - even at 1800rpm! Max RPM is 3000. Used as additional intake for my Lian Li PC-O11DW 011 Dynamic case (mounted in rear) to throw some cooler air near the M.2 SSDs.

My home build computer has seen three or four case fans over the last ~18 years but the Noctua fans I've installed this year have made it quieter than it's ever been.First installation was replacement of an old, noisy 80mm fan with a new Noctua fan in front to blow into the case. It's practically noiseless but I failed to realize I then had poor air flow through the case. The power supply fan was insufficient to exhaust what the front case fan supplied. My CPU cooler isn't extremely loud but it was still noticeable. I then installed this 60mm fan on the back, using the Y-splitter to coordinate fan speeds. Both were mounted using the Noctua rubber pull-throughs to isolate them from the case.The result has been excellent! The fans run around 20-30% speed and hold the motherboard temp around 95 degrees F where before it was mostly 25-35% and 105 deg F. Better, the AMD Wraith CPU cooler fan runs around 20-30% with the processor temp holding in the mid-90s F (~35 C), occasionally bouncing up around 115 deg F (~45 C) with the fan speeding up for only a second or two to pull it back down in the 90s again. Previously, I never saw CPU temps below ~105 deg F and fan speed under 30% with noticeable noise that's no longer there. All it took was better air flow through the computer with fans that are *_almost dead silent_*.I have a commercial grade UPS under my desk with an internal fan that makes enough noise to now be noticeable. That's next on my "Quest For Quiet." In my opinion, Noctua fans are the best way to go. Why does it matter they're wierd colors? They're worth the money because they do the job!Oh, yeah - did I say they're *_almost dead silent_*?.

Turned fans from a large storage array from being super loud to nice and quiet. Amazing fans.

I got s pair of these to quiet down a 2u server for home use, this one had dual cpus with 60mm fans on each I thought easy swap for quieter ones no big deal . Well the new fans are very quiet and look to be well made however that quiet appears not to be by design but by just making them very slow and weak. cfm is about 13~15 vs the 57 the stock cooler had which we can see by the .08a vs .57a power draw. So if your application needs decent airflow and quiet these are not the fans for you. if you just need slight airflow and basically no noise these are going to work well. in my case the cpu's hit 150+ after a few min and its a no go they can't cool them I need more airflow.