04-19-2022, 10:52 PM
anonymouse1 wrote:
Yeah, I think Eclectic Light messed up on this--he's confusing the SATA speed cap with an imagined Mac speed cap. Basically he's saying, "Why won't this SATA drive give me more than 650 MB/s, which is the fastest SATA can go?????"
Comparable results from tests kindly performed by markelp showed that an Inateck SATA RAID SSD and SanDisk Extreme Portable also connected at 5 Gb/s and returned comparable read and write rates of less than 390 MB/s and write of less than 418 MB/s. However, a Sabrent+Samsung NVMe conforming to USB 3.2 was found to connect at 10 Gb/s, and returned a read rate of 911 MB/s and write of 973 MB/s....
USB 3.1 Gen 2 storage connected direct to a Thunderbolt port on an M1 Mac was limited to 5 Gb/s, giving read rates of about 400 MB/s and write rates of about 430 MB/s.
...USB 3.2 storage connected direct to a Thunderbolt port on an M1 Mac operated at 10 Gb/s, with read and write rates of about 910 and 970 MB/s.
That's not a SATA bridge problem.