I bought 2 of these fan for my CPU cooler. So far I have used the default built-in fan my Cooler Master V6 cooler. However, I had this a lot too loud! At full capacity, they sounded like a vacuum cleaner and even when idle (20%), they were clearly heard and in the long run annoying. So I've read various testing and so have found the Silent Wings 2. I installed it immediately switched including quality rubber shock attenuation and the Pc. And the result is amazing! I had to once again check whether the fans are really plugged. Even at 100% utilization of the fans are barely audible.
I can see the Silent Wings 2 further definitely recommend! You are listening to utilization at 100% and still barely cool sovereign an overclocked i7 processor. -> The "high-end" on the packaging is absolutely justified