What components can I upgrade without needing a reinstall.

Title. If I change out my RAM will I need to reinstall Mojave? What about CPU and MOBO? And finally, what about GPU?

Planned upgrades:

RAM: 3200 C16 -> 3600 C18

CPU: R7 2700X -> 3800X

MOBO: B450 Gaming Pro Carbon AC -> some x470/x570 board for severe 3800X OCing

This one isn’t an actual upgrade, but if Mojave gets support for 5700xt (also, does anyone know when this is happening? Is it going to be soon?) id like to upgrade my 580 to that. Otherwise, would upgrading to a 590 require a reinstall?

Thanks!