GIGABYTE P850GM power supply unit 850 W 20+4 pin ATX ATX BlackFULLY MODULAR DESIGN All the black flat cables are modular design. Installing only the cables you need to reduce clutter, to increase the airflow and to improve the chassis thermal performance. 80 PLUS GOLD CERTIFIED 80 Plus Gold certified ensures to deliver 90% efficiency at 50% load. The better power efficiency leads to less power waste, less heat and less fan noise. And with the support of Intel processors, it will save more energy and more money.