I just bought a new MacBook Pro 2017 (no TouchBar) a month ago. I have run a speed test with Blackmagic Disk Speed Test application. The result is in image below. Blackmagic test result

I think SSD write speed is a little slower than normal. Anyone can help me with this? Thanks so much.

  • 2
    Are you running the latest version of Disk Speed Test? Prior versions don't support the 2016/2017 MacBook Pros properly.
    – grg
    Jul 11, 2017 at 13:16
  • The 10 Bit YUV 4:2:2 2160 with 30 is really slow. Me on my bike (no pedelec) I have a 3 min average of ~37 (street, sunny day).
    – klanomath
    Jul 11, 2017 at 13:39
  • @grgarside I have downloaded newest version from Mac App Store. It's version is 3.1. Jul 11, 2017 at 14:06
  • @klanomath So I wonder why? :( Jul 11, 2017 at 14:06
  • Maybe MBP nTB and MBP TB are different in SSD Speed? Your MBP has also TDP limitation at 15 watts vs. 28 W on MBP with TouchBar, and has one fan vs. two in MBP with TouchBar.
    – dmgl
    Aug 21, 2017 at 8:19

2 Answers 2


Im also getting very slow speeds with my MacBook Pro 2015 SSD. It is most likely something wrong with the app, in the past I got much faster with the same app on a older version with the same Mac.

  • Thank for your answer. If that is application issue, I will change to another benchmark app. Jul 13, 2017 at 8:30

I have the same issue with my 2015 15" 1TB SSD. The Read speed is fine, above 1800MB/s, but the Write speed will go down to 600MB/s. Once I run Disk Utility and First Aid, the speed increases again.

Black Magic and Etrecheck report very different speeds, with Etrecheck showing much better performance than Black Magic.

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