8plus certification is a rating of power conversion efficiency, which means that a power product must achieve a conversion efficiency load of more than 8% under the load of 2%, 5% and 1%.

The difference between white, copper and gold power supplies lies in the different conversion efficiency of power supplies. The levels of conversion efficiency are white, bronze and gold. The higher the power conversion efficiency, the more energy is saved. Conversion efficiency is only the standard of power saving, and can not be simply used to measure the quality of power supply.