The EVGA 500 BT Power Supply is here. Designed with enthusiast needs in mind, EVGA power supplies are the best choice to power next generation enthusiast computers. Combining 500W of continuous power with exceptional performance, stunning efficiency, and cutting edge design and features, the 500BT power supply is what you need to take your system to the next level. Quiet and Intelligent Auto Fan for near-silent operation. 80 PLUS Bronze certified, with 85% efficiency or higher under typical loads.