EVGA 220-P2-0850-X1 SuperNOVA 850 P2 Power Supply - 80+ Platinum Certified Fully Modular - ATX12V / EPS12V - 120V ~ 230V AC Input Voltage - 1 Fans - Internal - ATI CrossFire Supported - NVIDIA SLI Supported - 94% Efficiency - 850 W (220-P2-0850-X1)