Power supply unit power 1 200 watt certificates 80 plus platinum noise emission 371 db pci express connectors 8 pin 8 pci express connectors 6 pin 1 serial ata connections 10 cable management fully modular efficiency 20 92 efficiency 50 94 efficiency 100 92 cooling system active max fans 1 fan diameter 135 mm rpms 1 800 rpm special features power switch energy star 60 multi gpu support nvidia sli ready amd crossfirex ready n