Toughpower GX2 80+ Gold 600W SLI/Crossfire Ready Continuous Power ATX 12V V2.4/EPS V2.92 Non Modular Power Supply.The Toughpower GX2 is built to deliver 80 PLUS Gold efficiency. It features a 120mm cooling fan, multiple connectors for users to power up the build, and high quality components to help deliver a continuous and stable power with an ambient temperature up to 50 C, while near silent operation and reliable performance are guaranteed.