Power supply unit power 600 watt max power 650 watt certificates 80 plus silver noise emission 217 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 89 efficiency 50 91 efficiency 100 84 cooling system active max fans 1 fan diameter 120 mm power factor correction active motherboard power connectors atx12v 204 pins