We measure system-wide power draw from the wall while running Cyberpunk 2077 for 30 minutes. We do this at 1080p, 1440p and 2160p (4K) to give you a better idea of total system power draw across a range of resolutions, where CPU power is typically higher at the lower resolutions.
Total system power draw is very low, even with an i9-13900KS – we're talking in the region of 350W at 1080p, and slightly lower at the higher resolutions as the CPU load decreases. Nvidia officially recommends a 550W power supply.