Rule of Thumb:


Take the minimum PSU listed on the box and add 200–250 watts of headroom.


Examples:

GPU Box MinimumReal-World Recommendation
650W850W
750W850–1000W
850W1000–1200W


If you are using:

  • Intel i7 / i9

  • AMD Ryzen 7 / 9

  • Overclocking

  • Multiple drives / RGB / capture cards

  • High-refresh or multi-monitor setups


Add an additional +100W beyond the table above.