Desktop Computer Running Cost Calculator

Enter your PC's average wattage and daily hours in use to see real annual running cost, including a gaming/workstation load option.

⏱ ~10 sec💻 Office & gaming rigs🔒 No signup

Result

$71.29/yr
Annual cost
Monthly$5.94

A high-end gaming or workstation GPU under sustained heavy load can meaningfully raise annual cost — check your specific components' rated power for a more precise estimate.

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Why splitting idle and load time matters for PCs

Annual cost = [(Idle W × light hrs) + (Load W × heavy hrs)] ÷ 1000 × 365 × Rate

A modern desktop's power draw swings dramatically between idle browsing or office work and full CPU/GPU load during gaming, video editing, or rendering — averaging the two separately gives a far more accurate annual cost than assuming one constant wattage for all use.

Frequently asked questions

Does a gaming PC cost much more to run than an office PC?

Yes, potentially — a high-end gaming GPU alone can draw 250-450W under load, several times an office PC's typical full-system draw, meaningfully raising cost for heavy daily gaming or rendering use.

Should I turn my PC off instead of sleeping it overnight?

Sleep mode uses only a few watts, similar to phantom load on other electronics, so the energy savings from fully powering off versus sleeping are usually small compared to convenience lost from longer boot times.

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