EVGA SuperNOVA 550 GS Power Supply - 80 PLUS Gold certified, with 90% (115VAC) / 92% (220VAC 240VAC) efficiency or higher under typical loads Highest quality Japanese brand capacitors ensure longterm reliability Fully Modular to reduce clutter and improve airflow NVIDIA SLI & AMD Crossfire Ready Unbeatable 5 Year Warranty and unparalleled EVGA Customer Support Heavyduty protections, including OVP (Over Voltage Protection), UVP (Under Voltage Protection), OPP (Over Power Protection), and SCP (Short Circuit Protection)