I really wonder what Apple will do to the Mac Pro product line after switching to Apple Silicon. Will AMD or Nvidia eGPUs be ever supported?
Nvidia GPUs? That's is about a likely as getting some prime cut, pork chops at an Ultra Orthodox Jewish Temple.
Apple is not doing anything with Nvidia. They aren't now with Intel CPUS, that 'door' is even more shut on M-series and Apple's even deeper entrenchment into custom, proprietary Metal API evolution. ( Apple isn't going to allow CPU and Nvidia proprietary to take "first class" status from Metal. And Nvidia isn't going to budge off of their "first class" stance on their stuff. So impasse of the two giants... who don't particularly need one another to flourish. )
AMD ( or Intel dGPUs)? Not looking good at the moment. If it does happen, then it is probably coupled to a radically different GPU drivers. (.e.,g., Apple may move them out of the kernel. ). That would explain why Apple possibly is waiting until the old IOKit GPU driver are deprecated and discontinued. If the 3rd party GPU drivers come , they will probably be 2nd class (at the very least won't provision native iPhone apps. ) .
Apple is highly likely to replace much of the midrange GPUs. It is the high end that is somewhat questionable. Rumors, but if AMD rolled out a 512MB Infinity Cache and two dies along with 15+ K stream processors... is Apple really going to try to cover that?
AMD RDNA3 architecture rumors visualized through GPU block diagrams Olrak delivers new block diagrams visualizing AMD’s upcoming RDNA3 graphics architecture. The last two weeks have been filled with leaks and rumors on next-gen AMD GPUs, which brought a large list of details and even more data...
videocardz.com
( not too crazy of a set up if looking for a heavy mix of compute and some graphics . They are already shipping something with more that 15K processors now into the HPC market (with no video output ).
AMD's Instinct MI200 'Aldebaran' shipping to customers.
www.tomshardware.com
)
So then the question does the Mac Pro walk away from PCI-e v4 (or v5) for a very long time and throw almost all the bandwidth at feeding their own internal iGPUs rather than discrete GPGPU computational upgrades.
Also if Apple completely prunes off the midrange (and smaller ) GPUs is AMD (and/or Intel) going to be interested in doing the work for a much smaller potential market? Different path to unraveling, but perhaps similar endgame of where Nvidia relationship went. ( AMD can invest the same amount of resources (money and effort) into something else and get a better return in a number of areas. AMD isn't a "struggle to keep the lights on" company at this point. And Apple "makes do" without them; just like how they forego Nvidia now even though that is leaving off top end performance. ) If Apple is intent on limiting AMD to 2nd class status.... why should AMD stick around?