The manufacturer of your CPU
You can use the drop down selections to refine the results.
You can load your configuration if it has been created on this service previously.
Please note that the Wattage Calculator only provides an indication of the minimum power that your system
requires. In some circumstances, e.g., high-end graphics cards, SLI, or Crossfire, we advise users
purchase a higher wattage than the recommendation to avoid potential problems. Should you have any
questions or concerns, please contact our Technical Support
FAQ
The Seasonic wattage calculator adds together the power requirements of all the components in your build – CPU, GPU, motherboard, SSDs, cooling system, peripherals, and others. Then it automatically adds power reserve for peak loads, future upgrades, and stable system operation, and generates an estimated wattage for your system, giving you a reliable baseline when choosing a PSU. For more accurate results, input the power consumption of your components when running at full load.
To generate more accurate results, the Seasonic wattage calculator needs as much data as you can provide on the components your PC build has. Namely:
CPU, GPU, motherboard, RAM modules, SSD/HDD, cooling system, additional expansion cards, and peripheral devices.
Yes. The Seasonic wattage calculator supports the option to input data on power consumption from multiple GPUs and factor them into the overall result. Then add the other components’ power consumption and get the final figure. This way, you can use our online calculator to pick a PSU for AI workstations or professional builds that support multi-GPU configuration.
Yes. The power recommendation the Seasonic wattage calculator generates is the minimum required power for the PSU to ensure your build remains stable under load. For better system performance and longevity, pick a PSU with extra power headroom if you're planning future upgrades or overclocking.
Even though the calculator includes a safety margin, modern GPUs can still generate power spikes, so extra headroom is recommended.
Yes, it’s a good practice among professional PC builders today. If you choose a power supply with a higher wattage than the calculator recommends, you'll have more flexibility when it comes to peak loads and future component upgrades.