Everything you need to know about the 80 Plus certification, their methodology, and the different certification levels (Standard, Bronze, Silver, Gold, and Platinum). Updated to include the new Platinum certification for 115 V units.
"Efficiency is traditionally an overlooked power supply specification. It says how much power is being wasted while you are using your PC. Problem is that you are paying for this wasted power. The 80 Plus certification was created to allow consumers to know which power supplies are the most efficient ones and, as the name implies, guarantees that the power supply is able to present efficiency of 80%. With more and more manufacturers trying to design power supplies with efficiency well above 80%, they decided to create three new certification categories: Gold, Silver and Bronze. Learn what they really mean."