A gaming PC typically draws about 300-500 watts while gaming, around 400 W for a mid-range build. High-end builds with top graphics cards can pull 600-800 W or more; idle use is closer to 60-100 W.
- Running watts
- 400 WTypical; 200–800 W across models
- Starting watts
- NoneNo motor surge
- Per day
- 1.2 kWh3 h of use
- Current
- 3.3 AAt 120 V while running
Figures checked against DOE, ENERGY STAR and manufacturer data on . Your model's label is the final word.
Watts by model and setting
Most gaming pc models draw between 200 and 800 W while running; a typical one draws about 400 W. 400 W x 3 h/day of gaming; idle and desktop use are much lower. Monitor not included.
- Graphics card: e.g. NVIDIA lists 250 W total graphics power for an RTX 5070 and 300 W for a 5070 Ti
- CPU class and overclocking
- Game settings, resolution and frame-rate caps
- Power supply size sets the ceiling, not the actual draw (NVIDIA asks for a 650-750 W PSU for those cards)
Running a gaming PC on a generator or power station
- Generator: at least 400 running watts. A generator rated 1,000 W or more covers it with room to spare.
- Power station: continuous output of at least 400 W. Pure sine wave output is the safe choice for motors and electronics.
| Power station capacity | Estimated runtime |
|---|---|
| 500 Wh | 1.1 h |
| 1,000 Wh | 2.1 h |
| 2,000 Wh | 4.2 h |
| 3,000 Wh | 6.4 h |
Based on 400 W average draw and 85% usable capacity.
- Needs a pure sine wave source with headroom: GPUs cause very short power spikes above the average, so size an inverter or power station at roughly 1.5x expected draw
- A 1,000 Wh power station runs a 400 W gaming session for only about 2 hours
- Gaming during an outage is low priority; save fuel or battery for refrigeration and essentials
- Run any generator outdoors, well away from doors, windows and vents; never in a garage or basement, because of carbon monoxide.
Add it to the generator calculator
Questions people ask
Will a 1000 W power station run a gaming PC?
Usually yes for a mid-range build plus monitor, as long as it is pure sine wave. Runtime depends on battery capacity, not the 1000 W output rating.
Does a bigger power supply use more electricity?
No. A PC only draws what its components need; the PSU rating is the maximum it can deliver.