XPG COREREACTORII850G-BKCUS 850W 80Plus Gold Core Reactor II Fully Modular ATX Power Supply is an Intel ATX 3.0 Design Guide compliant full modular PSU offering up to 85% power efficiency and reduced electricity consumption while powering your system. Enjoy superior performance and reliability using the certified 100% Japanese 105℃ capacitors and whisper-quiet FDB fan with intelligent fan control. With a 10-year warranty, your system is sure to be powered for years to come.