GPU / PC Power Cost

Calculate the electricity cost of running a gaming PC or GPU workload and the power supply size you need, free online.

GPU board power (W)

CPU power (W)

Other components (W)

Hours per day under load

Idle power the rest of the day (W)

Electricity price per kWh

About this calculator

Energy = (GPU power + CPU/system power) × hours ÷ 1000 × utilisation. Recommended PSU wattage ≈ (GPU TDP + CPU TDP + 100 W for the rest) × 1.4 so the supply runs near 50–70% load for efficiency and headroom. Mining and AI workloads run 24/7 at high utilisation.