Summary: Extremely quiet for the speed. Moves LOTS of air too. The only complaint I have is that the included speed control only works with one fan at a time. But if your motherboard has onboard PWM speed control, these fans are compatible.
Summary: No dissertation needed. Rosewill is Newegg's house brand. I've owned a few of these over the last year and they're on par with almost every fan I've come across, even a few expensive ones. Noise level is a little high, but the cooling (moving of air) is excellent. As others have stated there is an optional fan controller that occupies the case PCI slot (not the actual motherboard PCI slot) that's great for adjusting the fan speed to reduce noise levels if needed.
Have Been Building Computers For Two Decades - Excellent Fan
Hyoun Kim "Faluzure", Amazon
11 April 2013
Summary: I've been involved with computers for two decades now and ever since my first computer, I've always built them via OEM parts. But if there's one thing about a computer component that gets on my nerves the most, it's the fans. You see, electronics (those that tend to get hot) need cooling. Back in the day, a simple heatsink worked to cool most parts. But within the past decade and a half, you need heatsink/fan combinations to get the job done.
Summary: They work well and are pretty quiet. The also come with a speed control rear panel mount that ties them into an old style drive 4 connector power supply. If the die soon, I'll update the review!
Pros: I loaded my antec 300 case with 3 of these babies, they work quietly and efficiently as intended. i read some reviews that said the fan control didnt work, i have had no problem with the fan control out of the 3 of these i installed.