The Corsair CMPSU-850HX PSU utilizes advanced DC-to-DC circuitry and meets 80 PLUS SILVER certification standards for up to 90% energy-efficiency, reducing wasted energy and lowering the amount of excess heat generated. Corsair professional series power supplies are built using industrial grade electrical components, ensuring the stable, clean and reliable voltages that are essential for high-end gaming PCs and workstations.