"The Silverstone Olympia line of power supplies are available in wattages ranging from 650 to 1200. I’ll be reviewing the Silverstone OP1200 1200W model which is more than enough power for even hardcore computer systems. The housing is steel and they include a very quiet 135mm fan which is recessed, but this PSU is extremely long so it might not fit in some smaller mid-tower cases. Also note that this fan is load controlled, meaning the more load on the PSU the faster the fan spins. Watch the video to find out more and check out the bloopers at the end." ~3dGameMan.com