With 7 PCIe you can theoretically put in a ton of GPU power in there, much more than a single M2 Ultra.
You can in any PC but ‘why’ is the response I’d be asking. The inbuilt GPU is already pretty good.
If you need that kind of parallel GPU power, you are already using a dedicated render server/server farm which can be shared amongst all your users as it’s significantly cheaper than equipping multiple work stations with multiple AXXX GPUs.
The point I was making is that all you could get in the old Max Pros was a couple of very underpowered Radeon cards, it was never a GPU powerhouse.
This Mac Pro is a very niche product, especially without GPU Support.
Squarely aimed at high end professionals who need PCIE Slot networking or outrageous storage requirements, no point for home users.
They already covered that in the keynote. It’s basically for the music industry so they can plug in all their legacy audio interfaces.
Edit: as far as I can tell, GPUs are not supported because nVidia and Apple refuse to work with each other because of the dodgy GPUs dating back nigh on 15 years at this point and no pro’s want to use AMD GPUs even if they were available.