Summary: Relatively silent, but not as silent as the previous 120mm 1500rpm's gen which I also have. Still a good fan but make sure you pricematch them ($42 almost seems like a site error). Not as impressed with these as I was with the previous gen, pick up the others if you can.
Pros: -Relatively silent, -Much cheaper on pm, -Noctua is still the best silent fan on the market despite its flaws
Cons: -All 3 I bought seem to have the bearings and/or fan rotation making slight mosquito noise from them, can't hear it unless you're really close though, but could be a problem if you're close to your case., -The grate over the front of the fan is much thicker than the previous 120mm gen. Despite the grates streamlining it's still too thick and creates unecessary resistance (the last gen had thinner grate), -Obviously expensive
Summary: After the 2nd Corsair H100 series water CPU cooler failed... enough was enough. I replaced the H100 with a Cooler Master 212 Evo and used these fans in a push/pull arrangement. Although I am running 5 - 10 C hotter with the 212 Evo, at least I am not at the mercy of some failure prone pump and fan controller. I cannot hear these fans running in the Corsair Obsidian 650 Case.
Summary: much better than the single stock fan I was using for my radiator. set two up in push-pull with my h-60, great airflow, low temps, and just as quiet as my single fan setup before. now the only fan that generates too much noise in my case is the graphics card.
Summary: Good fan, I bought it to use with a Corsair H-60, but it seems that my Cougar 120mm PWM fan works much better. So I gave it to my Son, for his PC, and it works great, and rather quiet, also...
Summary: I am pretty much a fanaholic, and I wanted my PC to be perfectly silent, well as much as possible. I needed PWM Fans because I wanted to be able to control and auto throttle the fans with the MB and not have to open up the PC to adjust or adjust my fan controller for my CPU Radiator Fans because id likely forget. These are the best PWM's I have found for the price so far, although they are still too expensive, and look hideous.
Summary: I also have the Noctua NF-P12 120mm Two Speed Premium Fan, 1300/900 RPM, SSO2 Bearing with NE-FD1 PWM IC which I reviewed and found them to be significantly quieter at full RPM. In order to quiet this fan down I used PWM capabilities of my motherboard to slow it down from 1500 RPM which made it quite noisy down to 1100 which still moved enough air but was much quieter.
Summary: great qulity, great bundle, good performance, unique colors, high price : it's a noctua. I have 4 over a corsair H100, there is a great improvement compared to the original ones of corsair in term of noise. at 1500, perform as well as the corsair at 2000 for the french speaking ones, check[...] and [...] The results of the noctua are very disapointing. i bought the scythe SY1225SL12LM-P R they reviewed, and they are very good! great silence and better perf than noctua.
Summary: This is a nice PWM fan, with lots of added pieces, including a 2-way pwm splitter that will allow you to hook two fans to a pwm header on your motherboard. I am only taking away one star because the fan colors don't really go with most cases, and it stands out enough to show through the grill in my case.