How much does it cost to run a gaming PC?
We've pre-filled a typical gaming PC below. Set your electricity rate and adjust the hours to match how you use yours — the cost updates instantly.
Typical power 500W
Usual range 300–800W
Category Entertainment & office
A gaming PC is in a different league from an office computer. Under load — a demanding game, rendering, or AI work — a rig with a big graphics card can pull 400–800W, more than a window air conditioner, and serious sessions run for hours.
At idle it's far gentler, so the cost is really about how many hours you spend at full tilt, and whether the machine is left running and rendering overnight.
What drives the cost of running a gaming PC
- The graphics card under load is the big draw; CPU-heavy work adds more.
- Hours at full load — gaming, rendering or mining — versus sitting idle.
- An uncapped frame rate makes the GPU work flat-out for no visible benefit.
How to cut it
- Cap the frame rate (or use V-Sync) so the GPU isn't maxing out for frames you can't see.
- Let it sleep when you step away instead of idling for hours.
- Undervolt the GPU/CPU — same performance, fewer watts and less heat.
- Don't leave overnight renders/downloads running on the full rig if a low-power device can do it.