Summary: Best compromise between volume of air moved and quietness. However, the is one cavet. These units are best when where is a little bit of air-flow resistence, such as would occur when pushing air through a mesh grill. Without that, they will spin up to full speed...at which point they whine noticeably. I have two mounted at the top of my case, where they have to push through a mesh grill. They push more air compared to noise level than any fan I've tried.
Summary: Solid fan, Added this to my Noctua NH-D14 CPU cooler after removing the other 120mm that came with it. With matching 140mm fans on the cooler, it looks fantastic. Only thing to look out for is the size of your RAM DIMMS with this setup and how high the fans need to be mounted . Regarding the fan, it looks good, works good, and blows a ton of air through the cooler to keep temperatures down. Very Quiet. Noctua FTW, now a huge fan... Hehe.
Pros: - Solid Fan, - Quiet, - Looks are far better than expected
Cons: - Cost, but worth it to those that buy them.
Summary: Installed it on the back of my Fractal Design R4 case. Fits perfect using the provided rubber plugs as cushion between metal. I had to play with it a little to figure out the best way to secure the fan instead of using the provided metal screws. Just make sure you push the brown rubber plugs in all the way and pull it on the back to hold the fan in place. The fan is quiet and does a good job exhausting the hot air out of the system.
Summary: Using it as a top exhaust fan in a computer case. Have it running at full speed and it's quiet enough for me. There are two lower speeds if you want it quieter. I have about a half dozen of this brand purchased over the past couple years and have never had a single problem with any of them. Bought them for their quietness but still run them all at full power. I don't mess with cheap fans; for the few dollars saved, it's not worth the hassle - and the noise.
Summary: I got 2 of these fans to replace the fans in my CM Storm laptop cooler. The fans that come with it are very loud an have a ton of vibration. These Noctua are God sent. No noise and no vibration, can't even tell they are on. They cool almost the same as the 2400rpm fans that came with the CM Storm. The Nactua are running at 1200rpm.
Not used as a computer cooling fan but very pleased with performance.
2 September 2013
Summary: These fans (3) were purchased to improve ventilation of an electrical cabinet and a berth area in a cruising boat. Since they operate on 12 volts and use very little power I thought they would be ideal for this application. A pair of custom panels were created to mount the fans and they have been installed and wired through a 12 volt DC timer. This allows the fans to be activated at various times throughout the day when I am not at the boat.
Summary: This fan is awesome! I built a silent beast with the help of Noctua. I used this as my window fan, and it pulls the heat away from my video card like nobody's business. I use the low noise adapter, and it still pushes plenty of air while being completely silent. While playing games at max with a 660TI at full load, this fan still keeps up with the cooling even with the low noise adapter installed. I have a Noctua for my CPU cooling fan as well.
Summary: Pros: Nice air flow Quiet Sturdy Cons: Odd design Cost Other Thoughts: Overall I really like this fan and would recommend it to just about anyone. Some complain about the color but I don't use a windowed case so it is irrelevant in my case. The round frame design is nice and makes it a very interesting unit to install on equipment.
Summary: This is the first Noctua fan i ever bought. And i was so impressed by the performance, Build quality, and low level of sound that i have since replaced 3 other fans in my rig with Noctua fans. This fan was a perfect fit for my bottom intake on my Fractal R3 case. You'll hear it running at full speed but it's very reasonable. And plus the amount of air this fan is feeding into my case is pretty impressive.
Summary: The primary reason I'm writing this is to help others who, like me, were confused by the multiple search results for this model number. In particular, there's another listing that's a little more expensive that looks like the exact same product and also has a number of sellers (many in common with this listing). I thought perhaps this listing was either mis-labeled or perhaps an OEM version.