Power supply unit power 700 watt max power 750 watt certificates 80 plus silver noise emission 288 db pci express connectors 8 pin 4 serial ata connections 6 cable management semi modular mains voltage 100 240 volt mains frequency 50 60 hz efficiency 20 91 efficiency 50 92 efficiency 100 89 cooling system active max fans 1 fan diameter 120 mm rpms 1 680 rpm power factor correction active special features energy star 60