Looking at all the performance graphs with RT on and 4k. Looks like double to me on all but FC6 That's the resolution I use and I want RT on, why wouldn't you when they've also enhanced RT performance?
Where you get 77% from anyway? 1080 & 1440p resolutions are all CPU bound anyway so not allowing full performance of the 4090 and would skew the result down as the 4090 wont be fully utilized - so was that an overall game average across all resolutions? Post link. Even then 77% not too special!?
What card you got? 970? Bet you thought that had 4GB of RAM when you bought it.
Techpower up FE review 4k RT on
Control
3080 - 32fps
4090 - 68fps
CP2077
3080 - 17fps
4090 - 42fps
Deathloop
3080 - 48fps
4090- 121 fps
F1 2022
3080 - 36
4090 - 85
FC6
64
96
Metro exodus
53
116
Resident Evil
75
175
Watch DOgs Legion
37
75
I agree with the silly money part. You pays your money you makes your choice. 'tis only money - can't take it with you.