Friday, January 27

80 Plus Certification. Power Supply ( The Bare Skinny )


Introduction



80 Plus is a voluntary certification program promoting efficient engergy use. It certifies that the products have better then 80% efficiency at 20%, 50%, and 100% of rated load. Power supplies certified 80 Plus waste 20% or less energy at specified load levels.




Description

Having a more efficient power supply means less power is wasted as heat. Your power supply's efficiency varies depending on the demands being put on it. Generally a power supply is most efficient between 40% to 60% load.

Most of the time your computer will be idling. Ideally you want your idle power draw 30%-40%, and max draw fall between 70%-70% of your power supply's rated wattage.


The Bare Skinny




  • 80 Plus
    • 80%
      • Bronze
    • 85%
      • Silver
    • 87%
      • Gold
    • 90%
      • Platinum
    • 92%
      • Titanium
  1. 80 Plus tests are performed at room temperature (23°C).
    Power Supply efficiency lowers the hotter it is.
  2. 80 Plus rating does not guarantee a power supply's quality
  3. Power supplies degrade over time

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