Neither of these cards (and perhaps others) can even boot the OS and instead leave you sitting at a screen filled with corrupted graphics. This issue has been around since 10.10 I think. You can use nomodeset to at least get into the OS and install the Nvidia drivers.
Might be something someone with more knowledge than me would want to fix, as this issue can't be a small one. Seems like a simple flag or some such could be set to default to nomodeset when certain cards are detected.
It's an odd issue as ever single PC I own has a different yet, still incompatible video card.