EVGA 850 GQ Power Supply. Ready for 4th Generation Intel Core Processors (C6/C7 Idle Mode). Introducing the latest in the EVGA power supply lineup, the GQ series. These power supplies take some of the best features from EVGA's award winning power supplies, like EVGA ECO fan mode for near silent operation, Japanese Capacitor Design and a highly efficient design, at an excellent value. These new power supplies are 80 Plus Gold rated and offer an outstanding 5 Year Warranty that's backed by world class EVGA support. 80 PLUS Gold certified, with 90% (115VAC) / 92% (220VAC 240VAC) efficiency or higher under typical loads Highest quality Japanese brand capacitors ensure long-term reliability. NVIDIA SLI & AMD Crossfire Ready. Heavy-duty protections, including OVP (Over Voltage Protection), UVP (Under Voltage Protection), OCP (Over Current Protection), OPP (Over Power Protection), SCP (Short Circuit Protection), and OTP (Over Temperature Protection).