PC Power Draw Estimator

From component load figures, estimate what your PC actually pulls from the wall.

Estimates only. These calculators use typical component specifications and rough rules of thumb. They are for planning and education, not purchase advice. Verify every number against your parts’ official datasheets before buying or building.

Estimate idle and load power draw from your CPU, GPU, and the rest of the system. Use this to size your PSU and estimate running costs.

Result

Peak load 525 W
Idle draw144 W
Load draw525 W
Estimated annual energy1818 kWh/yr
Suggested PSU700 W
Idle includes light browsing/desktop; load is a heavy render or benchmark. Size the PSU ~30% above peak load (700 W) for efficiency and headroom. See the PSU Wattage Calculator for a full parts list.
Idle vs load

Idle draw covers light desktop use and browsing; load draw is a render, benchmark, or heavy game. Annual energy blends the two using your daily load hours. Size the PSU roughly 30% above peak load for efficiency and headroom. For a full parts list, use the PSU Wattage Calculator.

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