Corsair RMx Series RM550x 80 PLUS Gold Fully Modular ATX Power Supply - Internal - 550 W - 1 Fan(s)

Zero RPM fan mode. Since the fan doesnT turn on until its needed, you will enjoy virtually silent operation at low and medium loads. 80 PLUS Gold certified. Gold certification ensures high efficiency operation for less excess heat and lower operating costs. Japanese 105 deg.C capacitors. Premium internal components ensure solid power delivery and long term reliability. Fully modular cable set. Installation is faster, since you can mount the power supply in the case first, and then attach only the cables you need. Energy efficient - designed to use less energy than alternative products, potentially helping you save money and reduce your carbon footprint.