Whether you're buying a power supply unit for the first time or needing to upgrade to a higher-wattage brick, you're going to want to pay close attention to the power supply ratings system.
Every PSU that you can buy right now will be 80 Plus certified, but not all are created equal, and the classifications are more of a spectrum than you may be aware of. It's a voluntary certification program and not a legal requirement for the hardware, but it can give peace of mind as to the quality of a product, as it means it has been independently verified.
