I’m using a Trebleet enclosure that gives me 2700MB/s reads/writes, when connected to my Studio M2 Ultra. Is there a better portable option out there? A WD Black SN508X supports up to 7300MB/s, which will match the internal M2 disk speed.
My understanding was that it is a limitation on any storage connected via the Thunderbolt port. (That is, that not all the 40 Gbps that Thunderbolt 3 and 4 can do can be used for storage devices.) The WD SN508X might do 7300 MB/s, but the Thunderbolt connection just cannot transfer data that fast. (And, no, USB isn't going to be any better.) If you're using it in an external enclosure with a Mac, there's no point in having an NVME SSD that's any faster than about 3000 MB/s. (But that's still pretty darn fast!)A WD Black SN508X supports up to 7300MB/s, which will match the internal M2 disk speed.