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How many watts does a desktop computer use? (200 W)
A desktop computer uses about 200 W
Typical range 80–600 watts, plus ~3 W on standby.
Typical range 80–600 watts, plus ~3 W on standby.
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A desktop PC's power swings widely with the task - idle browsing is light, while heavy multitasking or rendering pushes it high.
Desktop computer power specs
| Typical running power | 200 W |
| Typical range | 80–600 W |
| Standby draw | 3 W |
| Energy use | 1.20 kWh/day · 36.0 kWh/mo |
What affects the wattage
- Model size, age and energy rating.
- Settings and how hard it works (heat, speed, load).
- How many hours a day you run it.
Running cost at $0.17/kWh
| Electricity rate | Per day | Per month | Per year |
|---|---|---|---|
| $0.10/kWh | $0.12 | $3.60 | $43.80 |
| $0.15/kWh | $0.18 | $5.40 | $65.70 |
| $0.20/kWh | $0.24 | $7.20 | $87.60 |
| $0.25/kWh | $0.30 | $9.00 | $109.50 |
| $0.30/kWh | $0.36 | $10.80 | $131.40 |
| $0.40/kWh | $0.48 | $14.40 | $175.20 |
See the full breakdown of what it costs to run a desktop computer, or what size power station runs a desktop computer.
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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