The Cooler Master Megaflow 200 is a 200 mm fan that comes with most of the Cooler Master HAF series of computer cases. This fan moves alot of air while staying relatively quiet. The Cooler Master Megaflow spins at a max of 700 rpm and produces air flow of 110 cfm while only making 19 decibal of noise. So overall a great ratio of air flow to noise. The life span of this fan is rated at 30,000 hours. It also has four led's so it dosen't look half bad either. The Cooler Master Megaflow comes in either red or blue LED. I have this fan in the Cooler Master HAF 912 as an intake fan in the front of my case. It keeps my hard drive and video card running cool. This fan is probably one of the better 200 mm fan on the market.