The new Mac Pro that, despite having PCI Express slots can't be used to add discrete GPUs to the system for graphics tasks.
Hmm, I wonder if this is technical or something else.
I mean, nobody is going to get a Mac Pro just for games even if it works...
There haven't been Nvidia drivers for macOS for years. Maybe since like the GTX 900 series?
Yeah, Apple could build their own nvk-like for Metal driver at this point if they cared about any GPU other than their own. Nvk/mesa itself might enable Linux gaming on Mac pros with 3rd party cards.. one day.