Enthusiasts looking for the optimal in price performance PSU technology will find the Corsair CMPSU-650TX ATX12V & EPS12V Power Supply will meet even the most demanding of required specifications. Engineered using advanced technology and components typically found with high performance power supplies. Dedicated, single +12V rail offer the maximum compatibility with the latest system components. Energy efficient circuitry capable of delivering greater than 80% efficiency ratings across 20%, 50%, and 100% load conditions make the PSU ideal for the value/quality conscious enthusiast. With a large 140mm diameter temperature-controlled fan that is ultra quiet, yet still more than sufficient to cool the internals of the system, reliability and stability are no longer worries for the gamer, overclocker or enthusiast and high-end system builder.