What does your gaming PC cost to run?
Use wall power and your own tariff for a useful energy estimate.
A PSU label is not measured consumption
A 750 W PSU can supply a rated output; it does not mean the PC constantly draws 750 W. Workload, components, power limits and efficiency affect actual wall consumption. A suitable plug-in energy meter gives a better starting point than adding component labels.
Use a simple, visible calculation
Energy in kWh equals wall watts divided by 1,000, multiplied by hours of use. Multiply that by the electricity rate per kWh. For 300 W, four hours a day and 30 days, the energy is 36 kWh. Your cost is 36 times your applicable rate.
Account for different workloads
Idle use and gaming have different demand. Calculate each separately and add them together. Include the monitor and peripherals if they are on the measured outlet. Sleep and shutdown can reduce energy use when the system is not needed.
Understand the limits
Time-of-use tariffs, taxes, fixed charges and seasonal changes may affect the final bill. The calculator estimates the variable cost of the usage you enter. It does not read your electricity account or meter.