![]() ![]() The power reduction is accomplished in a few ways. Most of the savings would come from homes ( $200 million) and offices ( $170 million), and the remaining $80 million from data centers. According to a researcher at the Lawrence Berkeley Laboratory, Energy-Efficient Ethernet can potentially save an estimated US$450 million a year in energy costs in the U.S. In 2005, all the network interface controllers in the United States (in computers, switches, and routers) used an estimated 5.3 terawatt-hours of electricity. Some energy-efficient switch integrated circuits were developed before the IEEE 802.3az Energy-Efficient Ethernet standard was finalized. Some companies introduced technology to reduce the power required for Ethernet before the standard was ratified, using the name Green Ethernet. The IEEE ratified the final standard in September 2010. The first study group had its call for interest in November 2006, and the official standards task force was authorized in May 2007. The Institute of Electrical and Electronics Engineers (IEEE), through the IEEE 802.3az task force, developed the standard. The intention is to reduce power consumption by 50% or more, while retaining full compatibility with existing equipment. In computer networking, Energy-Efficient Ethernet ( EEE) is a set of enhancements to twisted-pair, twinaxial, backplane, and optical fiber Ethernet physical-layer variants that reduce power consumption during periods of low data activity. Logo of the study group and standard task force ![]()
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