Only path-tracing, not ray-tracing, is visually transformative tho.

(Full node jumps: 7nm -> 5nm -> 3nm -> 1.4nm -> ..)
Expecting 2 full node jumps from the PS5 (TSMC 7nm node variation) to PS6 (TSMC 3nm node variation) is reasonable (but it would also be only 1 full node jump from the PS5 Pro to PS6). Each full node jump gives about 25-33% better energy efficiency or FPS per Watt. So you go from e.g. 60 raw (=no up-scaling) FPS to 60*1.33*1.33 = 106 FPS.