PSU Wattage Calculator
Estimate a sensible power-supply range from your CPU, GPU and system configuration. Results are estimates with transparent assumptions, not professional specifications.
ESTIMATE
Start your shortlist at 650 W
Estimated sustained system load: about 420 W. A simple 35% planning margin gives roughly 600 W before choosing a standard size.
Check the GPU maker’s PSU guidance, 12V-2x6/PCIe connector needs, transient spikes, PSU quality and independent reviews. A wattage estimate cannot verify a specific PSU model.Use the result responsibly
These tools are educational planning aids. For a purchase, verify the exact hardware specifications, compatibility, transient power requirements, workload and independent testing.