MSI MAG 850W Power Supply Internal - 120 V AC, 230 V AC Input - 5 V DC, 3.3 V DC, 12 V DC, -12 V DC, 5 V SB Output - 850 W - Active PFC - 1 +12V Rails - PCI Express Connector - 1 Fan (s) - NVIDIA SLI Supported - 90% Efficiency