iMac / all-in-one computer vs. Mac mini: running cost
A Mac mini is cheaper to run: about $7 a year versus $25 for an iMac / all-in-one computer at typical use and 17.99¢/kWh, a $17 difference.
| iMac / all-in-one computer | Mac mini | |
|---|---|---|
| Typical watts | 60 W | 12 W |
| Watt range | 30–180 W | 4–65 W |
| Typical use | 6 hours a day | 8 hours a day |
| Energy per year | 138 kWh | 41 kWh |
| Cost per hour | 1.1¢ | 0.2¢ |
| Cost per day | 6.8¢ | 2.0¢ |
| Cost per month | $2.07 | $0.61 |
| Cost per year | $25 | $7 |
| Per year in Hawaii (43.51¢) | $60 | $18 |
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What drives the difference
- iMac / all-in-one computer: All-in-ones combine computer and display; Apple-silicon iMacs draw about 30-60 W in normal use, older 27-inch Intel iMacs 100-180 W.
- Mac mini: Apple-silicon Mac minis idle at 4-7 W and average around 10-15 W in normal use, making them one of the lowest-power desktops. Monitor not included.
Ways to cut either cost
Pairs the efficient Mac with an efficient display.
See options on AmazonUses 5-15 W for similar work if you already own an efficient monitor.
See options on AmazonWe may earn a commission from qualifying purchases. It never changes the numbers we show. Disclosure.
Frequently asked questions
Which costs more to run, an iMac / all-in-one computer or a Mac mini?
At typical use and the U.S. average rate (17.99¢/kWh), an iMac / all-in-one computer costs about $25 a year versus $7 for a Mac mini. That's $17 more, or 3.4× as much.
How many watts do iMac / all-in-one computer and Mac mini use?
An iMac / all-in-one computer typically draws 60 W (range 30–180 W). A Mac mini draws 12 W (range 4–65 W). Watts alone don't decide cost. Hours of use, cycling and standby matter just as much.
Rates: EIA, 12 months ending 2026-07. Methodology.