I guess that little problem with the Nvidia chips overheating in the MacBook Pro didn’t give Apple a lot of confidence
The Mac Pro isn't a Macbook Pro. It has socketed PCI slots and should be able to support the user's hardware in macOS' software, regardless of how Apple feels.
The Mac Pro isn't a Macbook Pro. It has socketed PCI slots and should be able to support the user's hardware in macOS' software, regardless of how Apple feels.