Do their job!
Upgraded from a 1080 card. Is it worth the upgrade?
Hard to say, is probably up to each one to decide on the extra 10-20 fpsn in games, as well as RTX and DLSS technology is worth it (right now, only a handful of games are supported).
This sounds even smaller than my 1080 Evga card and stays cooler.
Without RTX you can easily play all games in 4K with the highest settings.
With RTX it gets heavier, but with little tweaks in the settings it works well with.