@darthnull @siracusa @paul @atpfm
Someone has at least said the SSD has a daughterboard that at very least might call for despoldering resoldering, and control chips that might keep upgrades in house as Apple warrants and charges, rather than allowing an less expensive alternative from OWC or such.
External SSD expansion is still probably the easier and cheaper if slower and bulkier only route. From what I’ve heard.
@siracusa I couldn’t find one when I looked that compared both at the same size. I used https://www.tomsguide.com/computing/desktop-computers/mac-mini-m4-review#section-mac-mini-m4-specs and compared it to my M4 Pro 512GB.
Just found this thread talking about it https://forums.macrumors.com/threads/ssd-speed-vs-size.2442231 has a few results though I don't think any that has both from the same person.
Attached: 3 images The M4 256GB is faster than the M2 256GB, but no where near as fast as the M4-Pro 512GB.