EVGA SuperNOVA 850 GS 220-GS-0850-V1 80+ GOLD 850W Fully Modular EVGA ECO Mode Includes FREE Power On Self Tester Power Supply Fans: 135mm Teflon Nano-Steel Bearing Main Connector: 24Pin +12V Rails: Single PCI-Express Connector: 8 x 6+2-Pin SATA Power Connector: 12 Efficiency: 90% (115VAC) / 92% (220VAC~240VAC) or Higher Typical Over Voltage Protection: Yes Overload Protection: Yes