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).