AMD and nVidia on Windows: So your GPU is still very capable and useful for almost everything including most gaming tasks, but it's a couple years old and not making us money any more? Sucks to be you, have fun hunting for unmaintained legacy drivers with likely security holes from questionable sources.

Linux: Your video card is from a long bygone era of computing, before the term "GPU" was a thing, and basically a museum piece by now? We'll maintain a long-term support version for you for the next ten years.