Noctua NF-F12 iPPC 3000 PWM, Heavy Duty Cooling Fan, 4-Pin, 3000 RPM (120mm, Black)

Even though they're about as loud as a leaf blower (yeah, that's a tiny exaggeration), yes, they are loud when on high speed. But I have been using these fans for a few years now, and when they normally sell on their website for $54 a fan, I was like, how could I pass up this deal at $32? Also, they are hard to find because they are always sold out. So when I saw these here, I just knew I had to get them as fast as possible, even though I don't need them right now, and I always like to have some backup for my other seven fans in total just in case one or two goes out. I will have my favorite fans at my disposal.These are some great fans. They perform well. They might be expensive, but they can put out some leaf blower air, enough to blow your hair back. These are very, very highly recommended..

These things, these absolute units of fans, can and have turned any sort of CPU cooler into close to a noctua brand cooler. Are they noisy? Not really, only just louder than a box fan on low when they go to MAXIMUM OVERDRIVE! For some, that's too loud. For me? I want my PC to scream the battle cry of its people as it goes into the data stream. And scream it does. These fans, compared to the fans I've had before, keep my CPU 7 degrees cooler on average, and I can only imagine that with a full set mounted on the case, the temps would drop further as fresh, cool air is forced into the case at rates only a mad man would have dreamed of on a personal computer. Yet, as she roars, I know that above all else, my CPU is cool. Noctua, the only thing I could ever ask of you is to do high flow GPU fans, or your own GPU cooling block. That'd just be swell.

Everyone who builds this fan is a must.

High airflow, reasonable noise levels.There is a faint hum or buzz that does not go away even at lower speed compared to the brown/biege Noctua low noise fans. These iPPC-series fans are also overkill for most desktop PCs and recommend the low noise brown/biege fans for desktops instead. The faint hum or buzz is annoying even if not very loud.These are great for servers or workstations that need high airflow. I'm using several in a 4U rack (Rosewill 4500) machine learning workstation and they're perfect for that. Quieter and higher airflow than the garbage fans the case came with.Expensive, but I trust they will outlast the useful life of the PC components they're currently cooling. Buy once, cry once.

I know you, because you're me. You have a shiny new radiator which came with one or more perfectly functional fans, but you're now wondering if you can get an extra two or three degrees of performance out of your machine.So you started looking into the wonderful world of fans. You now know that there are many types of fans and you figure that if you're gong to do this, you're going to do this right. So you want static pressure fans. Somehow you learned about Noctua: well-engineered, quiet fans that your favorite YouTubers rave about. They're ugly as sin, but you've come to appreciate their ugliness as a mark of exquisite Austrian quality.THESE fans are not THOSE fans. They're well-engineered, yes. But unlike their retail sisters, they come in a classy black color. And they certanly are not quiet at 3000 RPM. I agree with the guy below who said he could barely hear himself think. I have two of these mounted in push-pull on a Corsair H60 AIO radiator. Anything above 1800 is kind of annoying. Anything above 2000 RPM is obnoxious. At 3000 RPM my PC sounds like a like a Ferrarri, which is nice, but I can't imagine running them at full speed for any period of time. But let's be honest: you really shouldn't expect a static pressure fan at 3000 RPM to be "quiet." That said, at 1500 RPM the fans are pretty much silent -- comparable to the retail version. Austrian engineering wins again.Performance? They work as advertised. At full speed they move a lot of air. But if you've studied any thermodynamics you know heat transfer into moving air very quickly hits the law of diminishing returns. Put simply: more speed does not necessarily equal more heat transfer. At 1500 RPM it's about 1-2 degrees cooler than two stock fan at full speed (not bad) and is much quieter. There isn't much of a temperature improvement when ramping up to 2900 RPM, but it does get much louder (see above).So if you insist on buying these, you might as well run them at 1500 RPM. But on the other hand, if you're going to keep them below 1500 RPM at load then why bother with the server-grade iPPC version? Why not get the iPPC 2000 RPM version? Why not buy the retail version which is a couple bucks cheaper?You've already dug this far into a stack of Amazon reviews, so you're still seriously considering it. You know why and I know why. You're impressed by the numbers: THREE THOUSAND RPM. >100 CFMs. > 7 mm H2O of static pressure. 150K hour lifespan (that's 17 YEARS of continuous operation). And IP52. I'm not sure what that means but I suspect the fans will outlast the apocaylpse.Is it worth it? Probably not. But you want these fans for the same reason you installed the water cooler and for the same reason you kept adding to your overclock. You want every ounce of performance. You want every degree of coolness. You want to press your machine to the limits. You can't imagine a situation where you'd need this kind of airflow but you like knowing that it's available.You can use #6 32 1-1/4" screws to mount them to your radiator. Don't forget the washers. You're welcome.edit: Ladies and gentlemen, I am writing from the future - May 2020. The apocalypse has, in fact, come. (Perhaps it is worth mentioning that I am a resident physician, and during these trying times gaming gives me some relief.) Many parts of the machine have been upgraded in the months since my original review, but the fans remain. And they still work. Stay home. Save lives. Be sure to wash your hands.

Great looking fan, moves a lot of air. The sound of the fan is well worth the performance. After a while you won’t notice the sound.

AS with all Noctua fans, this came in the great packaging. It fit the chamber heater mount I had built last year. The fan I was using was loud as a vacuum cleaner, but it did the job well. I was printing a couple days ago and that fan squealed to a halt, and ruined the print I was in the middle of. SO I was looking on Amaing and was about to buy the same fan, but I started checking the static pressure and sound db. and this one beat it in both areas BY ABOUT 30%. So now that this one is in the chamber I think I can tune it to have an array of speed/temperature settings..Noctua everytime for me now, the price is high and so is the quality.. You get what you pay for.