Functional. NVIDIA didn’t truly “open source” their drivers to anywhere near the same degree as AMD (AFAIK they didn’t give much for the community to work with), so you’re forced to use the proprietary ones in most cases. That might change over time, though.
I haven’t paid much attention on the matter, but how are the official open source drivers for the 2000 series and newer?
Functional. NVIDIA didn’t truly “open source” their drivers to anywhere near the same degree as AMD (AFAIK they didn’t give much for the community to work with), so you’re forced to use the proprietary ones in most cases. That might change over time, though.