I own Studio and whether it's a one-off Mac or not, I'm quite happy with it and will use it for many years even if it goes extinct in the product lineup.
Reading through this thread, it feels like many of our imaginations are constrained when thinking about a Mac Pro...
Is a Mac Pro only about the CPU (and thus if ULTRA is maximum, reserving ULTRA for it is the
only option)? Of course not! Mac Pro has
many points of differentiation and a new one could easily distinguish itself from Studio by bringing those with it.
But if we want imagine ULTRA will be all there is, how about 2 ULTRAs... not as the rumored EXTREME... but as 2 distinct boards, each basically a Mac Studio inside? Let an updated Mac Pro leverage dual ULTRAs much like we users could now if we own TWO Mac Studios: run some stuff on one and other stuff on the other. macOS could simply allocate the tasks much more efficiently than we could with 2 separate Macs. Yes, this would not be as fast as what the rumored Extreme would be likely to deliver, but it could be quite fast and bring options to double the RAM and SSD inside too.
Go there in your imagination and another upgrade could DOUBLE that setup (
four ultra boards inside equivalent to four Mac Studio Ultras in one case). That might be your "starting at $15K-$25K" Mac Pro alone).
However, if we mentally set all that aside, only the equivalent of a Mac Studio but with PCI-e slots would be enough to distinguish Mac Pro too. Slots mean a very different form factor and the implied promise of endless flexibility. This Mac would look completely different from Studio and imply much greater flexibility to buyers. An approach that only Mac Pro works with slotted cards means those who need cards consider/buy Mac Pro.
I am 0% convinced that enabling slots would block the option to have a new tier of RAM (expansion):
- fastest (Apple RAM as is),
- fast (traditional RAM in a slot),
- slow (swaps with SSD)...
...much like different cache levels in a CPU. While Apple RAM may be amazingly fast, it's not like traditional RAM is a dramatic speed clog. As is, when Apple RAM is overloaded, it starts swapping to much slower SSD. Traditional RAM would be much faster than SSD (swaps). If- as "we" spin to each other that those swaps are still unnoticeably fast to push minimal specced Macs- faster swaps to traditional RAM should be even faster. A "grand central"-like extension of macOS could manage what uses Apple RAM vs. what uses traditional RAM vs. what gets swapped in/out of SSD. This option to add traditional RAM would enable those who want/need Mac Pros with gigantic supplies of RAM.
Same with SSD. Slots open up SSD storage on cards. Those who need much more storage than Apple's MAX could have 3 speeds of storage: Fastest (Apples), Fast (card m.2), Slower (internal or external third party SSD/HDD).
The latter two (traditional RAM and SSD expansion) ONLY being applicable to Mac Pro would protect the cash cow of basically pressing buyers of all other Macs to pay the hefty premiums to buy whatever RAM and SSD they think they will ever need right up front.
To me, this Mac Pro easily fits into the Mac product mix, is very easily distinguishable with unique selling points, can justify its higher price even if it leans on the same ULTRA that is available in a Studio, and scratches the unique itches that makes people justify Mac Pro now.