Re:Teardown of the 14″ MacBook Pro M2 with Apple’s Help
by jltsiren on Sunday January 29, 2023 @05:29PM
(#34573447)
Thunderbolt 4 is a fast port but a slow bus. It's effectively 4 lanes of PCIe 3.0. High-end consumer SSDs typically expect PCIe 4.0 x4, or twice as much bandwidth. Thunderbolt 5 is supposed to provide that once it's finally released, but by then PCIe 5.0 SSDs will also be out, doubling the bandwidth requirements again.
The connector exceeds what even the fastest NVME SSD can deliver and the form factor of enclosures are small enough that you can simply carry it everywhere.