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Gaming PC Power Calculator.
Calculate power consumption and monthly electricity costs for gaming PCs
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Results update as you type.
Power Consumption Estimate
This calculator estimates power consumption based on component specifications. Actual consumption varies depending on load, drivers, and power settings. Use manufacturer specs for your components.
Component Wattages
Usage & Efficiency
Results
Total System Wattage
Sum of all component wattages
Required PSU Wattage
Recommended PSU capacity with headroom
Power Per Day
Daily power usage
Power Per Month
Monthly power usage
Power Per Year
Annual power usage
Cost Per Day
Daily electricity cost
Cost Per Month
Monthly electricity cost
Cost Per Year
Annual electricity cost
Use Cases
Plan Your PC Build's Power Budget
Before building a gaming PC, estimate total power consumption to choose an appropriate power supply unit (PSU) and avoid overloading.
Example: Estimate a build with an RTX 3080 and i9-11900K to see if a 750W PSU is sufficient.
Calculate Gaming Electricity Costs
Determine how much your gaming habits cost on your electricity bill, helping you budget or adjust usage.
Example: Find out the monthly cost of gaming 4 hours a day at $0.15/kWh.
Frequently Asked Questions
- How does the Gaming PC Power Calculator estimate power consumption?
- The calculator uses typical power draw values for common gaming PC components like CPU, GPU, RAM, and storage. You input your components, and it sums their estimated wattages to give a total system power consumption estimate.
- What factors affect the electricity cost estimate?
- The cost estimate depends on your total power consumption, the number of hours you use the PC daily, and your electricity rate per kWh. The calculator multiplies these to show daily, monthly, and yearly costs.
- Is this calculator accurate for all gaming PCs?
- It provides a good estimate based on typical component power draws. Actual consumption can vary due to overclocking, cooling, and usage patterns. Use it as a reference, not an exact measurement.
Tips & Common Mistakes
Tips
- Use the highest expected load (e.g., gaming) for a conservative estimate of power consumption.
- Check your electricity bill for the exact rate per kWh to get accurate cost estimates.
- Consider that components like RGB lighting and extra fans add a small amount to power draw.
- For more precise results, use a watt meter to measure actual power draw under load.
Common Mistakes to Avoid
- Forgetting to include all components like storage drives, fans, and RGB controllers in the estimate.
- Using peak power draw for all components simultaneously, which rarely happens in real usage.
- Not accounting for power supply efficiency (e.g., an 80 Plus Bronze PSU draws more from the wall than its rated output).
Last updated: August 13, 2026