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I just bought a third-gen Apple TV, and I don't want to have to into Settings to put it to sleep every time I'm done using it. It seems it won't fall asleep automatically for quite some time, so I'd like to know how much power it draws when not in use.

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You can configure the time to auto-sleep with Settings > General > Sleep after, which ranges from 15 minutes to 10 hours, or never. You can also manually put it to sleep by holding the play/pause button while a home screen icon is selected. (This only works when selecting the "app" icons, not the large content images on top.) –  Tyler Wayne Feb 19 '13 at 22:38
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up vote 4 down vote accepted

According to the review on FlatpanelsHD.com, it will use 0.8 watts when in standby (not sleep), and 1.9 watts when in use. To use their description, this is "ridiculously low."

Since all the device needs to do is wait for Bonjour, AirPlay, or IR signals — and the upper number matches up with Apple's own report — I'd say this is believable.

Fun perspective fact from the Apple report: It takes 30 Apple TVs, all streaming HD video, to use the same amount of power as a common 60W light bulb.

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This applies to the second generation, which I'm assuming is similar enough to the third generation. I may, of course, be wrong. –  Tyler Wayne Feb 17 '13 at 9:26
    
I didn't know that! That's actually pretty impressive. –  Emil Feb 17 '13 at 10:04
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