"The Cooler Master Sileo 500 Case is one of a few silent computer options. It has acoustic foam on both side panels, top and bottom. This means that the case is really quiet and it's an excellent option for anyone who requires a quiet computer system. It also comes with lots of drive bays, two 120mm fans, tooless design and looks great. Watch the video to find out more..." ~http://www.3dGameMan.com