The best example that comes to my mind is Chrono Trigger (as I don't have the esoteric RPG library experience a lot of you do). The most damage you are going to kick out with a single character magically is lv99,Magic** Luminaire for 6088 damage with the Prisim Specs. That is 4x what you are getting from the maximum strength physical attack*, 8x the non-critical hit damage. All done without a hints that the game has a damage cap.

*I'm ignoring Ayla's lv99 '9999' critical hit damage as it is just kind of a random outlier.