Power-hungry Mac mini
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.