Got a tip for us?
Let us know
Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
SSD MBP 2017 13" too slow?
- Thread starter sponch
- Start date
- Sort by reaction score
Assuming that the benchmark is accurate, that's not normal. It would be more conventional for write speeds to fall some over time - especially as the drive becomes increasingly full. With that said, with most usage, I doubt one could tell the difference between a SSD that is reading at 1 GB/s vs. 3 GB/s...unless you are noticing this when duplicating multiple-GB files with pre-High Sierra macOS, exporting large videos, or moving files between an external NVMe-Thunderbolt3 SSD, it seems possible the cause of your slowdown is something else. You could always pull the drive's SMART data to ensure it is healthy.
However, Black Magic just said that my 2017 rMB NVMe SSD has 92 MB/s writes and 176 MB/s reads - then I retried the test again a few minutes later and it went up to around 1,000-1,500 MB/s. Black Magic is no ATTO or Anvil... It's ability to approximate to real-world usage seems very limited (IIRC it only plays with incompressible data and does not test multiple file sizes), and its consistency doesn't seem to be all that consistent!
However, Black Magic just said that my 2017 rMB NVMe SSD has 92 MB/s writes and 176 MB/s reads - then I retried the test again a few minutes later and it went up to around 1,000-1,500 MB/s. Black Magic is no ATTO or Anvil... It's ability to approximate to real-world usage seems very limited (IIRC it only plays with incompressible data and does not test multiple file sizes), and its consistency doesn't seem to be all that consistent!
Last edited: