Calculator

PSU Calculator

Estimate peak system wattage and choose a PSU size with practical headroom for high-load gaming, rendering, and AI work.

Calculator inputs

GPU model

Average GPU load

Hours per day

Electricity price per kWh

Days per month

CPU watts for PSU estimate

Daily cost$0.75

Monthly cost$22.46

Yearly cost$273.31

Energy per year1,518.4 kWh

Daily$0.75

Monthly$22.46

Yearly$273.31

Assumes 520 W average load, 8 hours per day,30 days per month, and $0.18 per kWh.

Estimated peak765 W

Recommended PSU1,000 W