How much does it cost to run a 500 W gaming PC? Electricity usage explained
A mid-range 500 W gaming PC running 4 hours a day at a realistic 80% load costs about $105.12 a year to power, at a US-average rate of $0.18/kWh. That's roughly $8.76 a month and works out to 584 kWh of annual consumption, about 3% of an average US household's total electricity use.
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How this is calculated
Most real-world gaming sessions don't pull a PC's rated maximum wattage for long: peak draw only happens during the most demanding scenes. The 80% utilization assumption used here captures typical AAA gaming. Esports at lower resolutions may run closer to 50%. Desktop idle (web, video) is usually under 10% on modern builds thanks to Intel's P/E cores and AMD's CCD power gating, which brings the effective running cost much lower if most of your PC-on time isn't gaming.
Verdict
$105 a year for a mid-range build is a small fraction of what the hardware itself cost. Electricity is rarely the deciding factor on a consumer desktop. It's the all-day servers and workstations where the difference between a 500 W and 850 W class starts to matter financially.
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Frequently asked questions
How much electricity does a 500 W gaming PC use?
Will a higher wattage power supply increase my electricity bill?
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