I'm curious as to a problem I have. So, I bought a 2009 Mac Pro recently (with only coins, it was pretty epic) and did a little trickery to get macOS Mojave onto it. However, the video card preinstalled is the original and pretty weak video card. I was hoping to put at least something better into it, but every card I try, it doesn't display anything. I've been informed that (unlike Linux, it seems) I need to get drivers -- macOS is not plug-and-play with video cards. However, I can't seem to find driver downloads (macOS versions) for any of the various cards I've tried -- if I find anything, it's Windows only). I was wondering if Apple has a different way to install video drivers, or perhaps there's a website somewhere where video driver packages run free through the tall grass.
I've tried several cards, including the NVS 300 (which I was just trying to see if it was at least a bit better), as well as a red FoxConn card (which I can't even find Windows drivers for).
Any insight would be appreciated.