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WattFit

How much electricity a gaming PC really uses

Electricity cost is arithmetic: power × time × rate. Marketing TGP is not a bill.

Load hours vs always-on

Gaming load dominates when you play. Idle dominates when the PC never sleeps. Measure both if the machine is a 24/7 box.

Using WattFit

Pick a GPU from the power table, pick a state rate, set hours. The tool prints monthly and yearly dollars for load hours. Add idle separately if needed.

Why state rates matter

Residential averages differ widely across U.S. states. A 300W card is not the same monthly cost in two utilities.

General information, not personalized advice.

FAQ

What is the core formula?

kWh = (watts/1000) × hours; cost = kWh × $/kWh.

Where do watts come from?

Our GPU power table uses review-style load averages when available; you can override.

Where do rates come from?

A U.S. state residential snapshot with as-of date — or your utility bill.

Is PSU wattage the same as draw?

No. PSU rating is capacity. Draw is what the wall sees.

Advice?

Educational estimate.