Pros: A quiet fan of high quality that is obvious immediately upon removing it from the packaging. The temperature in my case has dropped better than 10° F since installing these fans along with the Noctua NF-P12-1300 120mm fan that I purchased as well to replace the front case fan. These fans replaced the dying fans in my RaidMax Smilodon case and it is far quieter than with any of the other fans I've used in it before. [Note: I am running these w/o using the included speed reducers since this is a gaming rig but still a very quiet operation.] Oh ya; Warranty: 6 years, speaks for itself. Personally, I like the color of these fans; although, I believe it would be better for Noctua to create a variety of colors since people can be quite finicky about the look of their case. If you want a quiet, cool case then look no further!

Cons: None.

Overall Review: It seems that some people like to interchange the terms 'Quiet' and 'Silent' as if the words were synonymous. There is no such thing as a 'silent fan' other than that fan which has turned OFF or has seized, simple as that. Additionally, for the few people that have an issue with the price of these fans vice other fans, its all about the quality. This is neither the typical sleeve-bearing fan nor is it a ball-bearing fan. This fan uses a self-stabilizing oil-pressure bearing in order to provide not only low noise but longevity as well. If you make the choice to purchase these fans then it is not fair to rate them down because you don't like the price afterwords. That is not a 'con' what-so-ever. They do what they were designed to do and they do it quite well. There is a very good reason why there are 'cheaper' fans available... there once was a car available named 'Yugo' but there still is a car available named 'Lamborghini'!

Pros: I have one of these cooling a mini-itx rig that I use as a Minecraft server. The computer sees near 24/7 up-time but I never notice it – it's nearly dead quiet. This little fan pushes a surprising amount of air even with the low-noise adapter attached. The fan comes with lots of goodies: a low noise adapter, an ultra-low noise adapter, and a molex to 4-pin connecter. Super high build quality and it feels and looks solid.

Cons: Hard to say a lot here but I'll try my best to be critical. Not PWM, but honestly that shouldn't be a problem. Hook up the low noise adapter or the ultra low noise adapter and you'll never hear it unless your ear is right next to it. Plus, Noctua has a PWM version of this fan for 2$ more at the time of writing if it's that important to you. Color: some people might not like it but personally I think it sets Noctua's fans apart and makes them look special (because they are). Price? Again, not really an issue in my mind. You're paying for a very high build quality fan that does exactly what you'd expect it to: it moves lots of air quietly. Also, it has a 6 year warranty, and though I've never had to deal with it personally, from what I've read Noctua's customer support is very good.

Overall Review: Bottom line: if you're looking for a 80mm fan to keep a small-form factor machine cool and quiet, this is the fan for you. If the color or the cost bothers you, just suck it up and buy it anyway; I promise you won't regret it. The LNA and ULNA as well as molex power adapter are super nice and give you tons of flexibility.

Pros: 1. Quiet 2. Moves the air well 3. Rubber mounting screws are neat-o 4. Highest quality craftsmanship I have seen in a fan

Cons: None

Overall Review: Rubber mounting screws are a bit tricky - just a warning that you will need patience.

Pros: Super quiet! Mounted in a case and running 2 of these guys alone as in picture. The room reads at between 42 and 48 db. With the meter exactly one foot above the fans the meter doesn't change. That is full speed not with the rpm limiting cables included. No one, absolutely no one can say these fans can be heard over a fan cooled GPU, CPU, or closed loop market liquid cooling system. Quietest 80mm fans I have ever tested.

Cons: None.

Overall Review: Noctua could add a little color to maybe match case interiors but honestly dose not need to for me to keep using them on most builds.

Pros: - Exceptionally quiet - Moves air well

Cons: - Expensive (but worth it)

Overall Review: I used 3 of these to replace 3 Antec fans that shipped with my case, and were loud enough to be a distraction when they were all running. These Noctua fans are unbelievable. They are amazingly quiet, and actually cool the case better than the fans they replaced. I will be using Noctua fans on all of my cases from now on.

Pros: There are some excellent fans out there, and Noctua is right up there with the best of them - quiet, reliable, durable, move plenty of air.

Cons: Two "cons" worth mentioning (but not justifications for deducting any eggs): [1] The ugly color could be a con for those with case windows and a particular color theme they want to stick to, but for everyone else you only have to look at it while you build and when you upgrade, so, really, who cares? And some folks may actually like the colors...as aesthetically challenged as they may be, bless their hearts. [2] They are very expensive, so if I'm needing Noctua's I take advantage of NewEgg sales and fan eCoupons (I can stomach 20%-25% off the regular NewEgg price)...you have to wait and watch for them but they do happen.

Overall Review: For me, Noctua's are the best fans to use in a Home Server - they can easily handle running 24/365 year after year...they're "set it and forget it" good.

Pros: While not totally silent (what moving fan is?), is very quiet. The noise it does produce is a pleasing, even white noise, not a peaky, rattly high-pitched whine like many fans produce. This is due to the notches on the blade edges, evidently. The cable wrap is a real nice touch, love that. The included silicon mounts are great. Means I don't have to buy them, which helps justify the cost. The warranty is unreal long. The included adapters for "medium" and "low" speed are a nice bonus. As are the molex adapters. If you're using this as a case fan, as I am (intake on the side and front), I don't have a mobo fan port to plug into. They came with all the kit I needed to mount the fans up and adjust their speed from full throttle 12V down to a more reasonable rate. I am using these fans to blow directly over the platter drives (WD Green) and over the RAM sticks and supply cool air to CPU cooler, which has another Noctua fan on it (92mm). Box is so quiet, you can't tell

Cons: I don't really care for the color scheme, but it's a fully enclosed case, so I don't care. I do like these fans enough that if they made them in even all black I'd buy them even if they cost an extra buck for the black (or even clear). Maybe it's the material they're made of, but sheesh it's plastic, add a dye to it already. I'm certain they make them this ugly just to be different and distinctive. They're undoubtedly driving away business in the process.

Overall Review: If you're looking for a very quiet, efficient, long-life, reliable fan for an application that requires moderate airflow (not a vortex of death), then this is a great choice, if you can get over the "chocolate on raw chicken" color scheme they've got going.

Pros: This fan moves a good amount of air for it's size and for the noise it generates. The fan includes two adapters to regulate the noise and airflow, a "low noise" and an "ultra low noise". With the low noise adapter the fan is for all intents and purposes inaudible, unless you stick it right up to your ear--inside of a case and/or a few feet away and you wouldn't even know it was there. The fan comes with a 3 pin connector, but also an adapter so you can hook it up to the standard four pin power supply connectors. 4 rubber noise dampening mount pieces, in addition to 4 mounting screws are included.

Cons: none

Overall Review: I have it in an htpc, very satisfied. Moves 31 cfm at full speed, 23 cfm at the low noise setting, and about 15 at the ultra low noise setting. The noise the fan generates at the maximum speed is not unbearable, it's rather harmonic, it's not loud, and the noise you do hear is not grating on the senses. I'm currently using it at the full speed setting and am satisfied.