It’s kinda bonkers but if you have a computer with USB 3.1/3.2 or Thunderbolt 3, those can actually be faster than SATA III. I have a Type-C/3.2 external SSD that I get 1200MB/s reads with.
I wonder how many more years motherboards will even have SATA connectors now that they’ve been outclassed both internally and externally.