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.
We saw a peak total system power reading of 408W when running Cyberpunk 2077 at 1080p. Nvidia officially recommends a 650W PSU which will be more than enough. Of course, it does depend on the game, but considering we didn't see more than 410W with an i9-13900KS, you could probably get away with a slightly lower capacity unit.