Previous video comparing visual differences (with a screenshot of the summary table and a very good comment on the whole topic by coyotino):

https://beehaw.org/post/16695979

Radeon 7900 XTX performance cost of good RT configurations at 4K:

https://i.imgur.com/x1qpE92.png

Geforce 4090 performance cost of good RT configurations at 4K:

https://i.imgur.com/kVhNWiY.png

Comparison:

https://i.imgur.com/gOJbFYM.png