PSU Wattage Calculator
Transparent power budget with user-adjustable assumptions.
How it’s calculated
Load = (CPU + GPU + board + memory + drives + fans + peripherals) × (1 + overclock). Recommended = load × (1 + headroom), rounded to 50 W.
Limitations & assumptions
Use maker peak/board power, not only TDP. Transient spikes can exceed averages. Wattage is not PSU quality: check certification, protections and connectors.
FAQ
More wattage wastes power?
Not meaningfully; a modest margin is fine.