Power-hun­gry Mac mini

Mac Format - - APPLE TALK -

My three-year-old Mac mini is al­ways warm to the touch when I come down­stairs in the morn­ing. Ac­cord­ing to Ap­ple’s own web­site, the Mac mini is only sup­posed to use 1.5 watts when it is sleep­ing but mine is us­ing be­tween 13 and 15W (mea­sured with a me­ter from my elec­tric­ity sup­plier). What is caus­ing it to use so much power when it is sup­pos­edly asleep? Robert Cas­ton

If your Mac mini is com­pat­i­ble with Power Nap, it can per­form a lim­ited range of tasks while it’s oth­er­wise asleep. Ap­ple warns that this can make a Mac warm to the touch (see http:// ap­ple.co/1NkCd2Y). Try turn­ing off Power Nap in En­ergy Saver pref­er­ences. Al­ter­na­tively, a process or ser­vice may be pre­vent­ing the Mac go­ing to sleep. In Ac­tiv­ity Mon­i­tor, click the En­ergy tab and try quit­ting apps that say ‘Yes’ in the ‘Pre­vent­ing Sleep’ col­umn.

Macs are power ef­fi­cient in sleep mode, but they have to get there first.

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