Corsair CX Series™ CX650 – 650 Watt 80 PLUS Bronze ATX Power Supply (AU), Compact 125mm, Up to 88% Efficiency CORSAIR CX Series Power Supplies feature low-noise cooling and a compact design for an easy fit in nearly any modern case. •80 PLUS Bronze efficiency up to 88% •Guaranteed continuous power •120mm low-noise cooling fan •Compact 125mm length