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What size generator or power station for a desktop computer? (250+ W)
To run a desktop computer, choose at least
250 W running.
250 W running.
A desktop computer draws about 200 W while running. Pick a generator, inverter or power station rated comfortably above these numbers.
Battery runtime calculator
Estimated runtime—
Assumes about 85% usable capacity. Motors need extra headroom for startup surge.
How long a power station lasts
| Power station | Estimated runtime |
|---|---|
| 300 Wh | 1 h 16 min |
| 500 Wh | 2 h 8 min |
| 1,000 Wh | 4 h 15 min |
| 2,000 Wh | 8 h 30 min |
| 3,000 Wh | 12 h 45 min |
Sizing guide
| Minimum running watts | 250 W |
| Minimum starting watts | 250 W |
| Suggested inverter | 300 W or higher |
See also desktop computer wattage and running cost.
FAQ
How many watts does a desktop computer use?
Everyday desktops use about 80-250 watts; powerful workstations can exceed 500.
Does sleep mode save power?
Yes - sleep drops draw to a few watts, far less than leaving it fully on.
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