I recently purchased components for and assembled a i7 cpu based computer, starting with a Cooler Master HAF932 case. The case comes with fans, but the one in the front of the case was quite noisy, so i replaced it with another made by another manufacturer that claimed its fan would be quiet. Not even close - it had a horrible high-pitched sound. I did more research and decided to try this SilenX Ixtrema Pro - 120 mm with blue LED. THIS is a quiet fan. It keeps my RAID array cooled, with whisper quiet oper..