Sleep, Computer, Sleep.
Consider the following: A standard-issue PC and monitor left on all the time (a not-uncommon situation) consume 1,109 kilowatt-hours a year, according to estimates from the Environmental Protection Agency. By comparison, refrigerators that meet federal energy-use regulations use, on average, about 514 kilowatt-hours a year. Surely there are things a user can do to reduce a computer's carbon footprint.
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