The "80 PLUS Gold" certification is a standard for power supply units (PSUs) that indicates high energy efficiency. To earn this certification, a PSU must achieve at least 87% efficiency at 20% and 100% loads, and 90% efficiency at 50% load. This means that less energy is wasted as heat, leading to lower electricity bills and a reduced environmental impact. PSUs with the 80 PLUS Gold rating are ideal for gamers and professionals who require reliable performance. They are designed to provide stable power to components like graphics cards and CPUs, ensuring optimal operation while minimizing energy consumption.