Monday, November 1, 2010

Should You Shut Down Your Computer or Put It to Sleep?

Phew! You've made it through another day at the office. You're just about to don your coat and head out into the evening—but your computer's still on. Should you turn it off, or leave it in "sleep" mode? Some say it's better to shut down, since that way it won't be using any power while you're not around. But others say that the process of shutting down and starting up again uses more power than letting your machine sleep. Who's right? First things first: Turning your computer off, then on again does not use more power than leaving it on in "sleep" mode. "That's a myth," says Bruce Nordman, an energy efficiency researcher at the Lawrence Berkeley National Laboratory. Another myth: Turning your computer on and off is bad for the machine. "In order to do any real damage, you'd have to turn it on and off far more frequently than anyone would ever want to," says Nordman. That said, trying to remember to shut down your machine every night isn't necessarily the most effective energy-savings strategy. More>