I think a big question is, what framerate do you want? 30/60/144? Do you also want to run at the highest quality settings?
For reference, I have a 3080 and can 1440 most games at 144hz, settings maxed out. A few new games from this year need some settings turned down, but you mention last gen games, so this shouldn't be an issue.
Rich assholes who want to influence government will.