Also this release is just weird. M3 Max doesn’t have Thunderbolt 5. M4 is what introduced it. M* ultra is two M* Max connected. So M3 Ultra is not REALLY two M3 Max, since the ultra has Thunderbolt 5. So what other changes are included?
if the M3 Max+ die is bigger then TBv5 could have been added because there is more room and more time (if they did the augment after the deadline for the M3 max rollout).
The PCI-e backhaul provisioning on the M2 Ultra is odd (non-symmetrical and Apple tends to be OCD symmetric) x8 and x16 PCI-e v4. I would expect Apple to 'update' that for the Mac Pro , especially if it is completely saddled with M3 Ultra only as a solution. Dual x8 PCI-e v5 would be a substantive step up. Perhaps tweaks to an symmetric x16/x16/ . if the SoC needs to get bigger than what the MBP 14" logic board would fix for a M3 Max part then perhaps not a problem.
In short, a SoC die building block that was oriented toward desktop I/O ; not laptops. Thunderbolt 5 is still mostly warped into laptop primary focus. They need to get to decent desktop I/O for the Mac Pro to bring value to the table.
P.S. the other variant on TBv5 is that was there on the M3 Max but either broken, incomplete , and/or uncertified. Because this is later it is fixed and/or certified. [ I suspect the die footprint for TBv5 is bigger so I'm leaning toward skipped for space savings. ]
Last edited: