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80 Plus (trademarked 80 PLUS) is a voluntary certification program intended to promote efficient energy use in computer power supply units (PSUs). Launched in 2004 by Ecos Consulting, it certifies products that have more than 80% energy efficiency at 20%, 50% and 100% of rated load, and a power factor of 0.9 or greater at 100% load. Such PSUs waste 20% or less electric energy as heat at the specified load levels, reducing electricity use and bills compared to less efficient PSUs. ==History== * Ecos Consulting (promoter and owner of the brand) and EPRI (Electric Power Research Institute) develop the Generalized Internal Power Supply Efficiency Test Protocol for desktop derived multi-output power supplies. * March 2004: the 80 Plus idea was presented as an initiative at the ACEEE Market Transformation Symposium. * February 2005: the first market-ready power supply was created by Seasonic. * 2006: Energy Star added 80 Plus requirements to their then-upcoming (in effect since July 2007) Energy Star 4.0 computer specifications. * November and February 2006: HP and Dell certify their PSUs to the 80 Plus specification. * 20 July 2007: Energy Star Computer Specification 4.0 goes into effect. The specification includes 80 Plus power supply efficiency levels for desktop computers. * December 2007: over 200〔.〕 PSUs on the market are 80 Plus certified and it is becoming the market standard. * First quarter 2008: standards revised to add Bronze, Silver, and Gold higher efficiency level certifications. * October 2009: added specification for Platinum efficiency level. * February 2012: Dell and Delta Electronics working together were able to achieve world first 80 Plus Titanium server power supply. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「80 Plus」の詳細全文を読む スポンサード リンク
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