MBP 2016TB HD Speed Tests

Discussion in 'MacBook Pro' started by iBrooker, Mar 2, 2017.

  1. iBrooker, Mar 2, 2017
    Last edited: Mar 2, 2017

    iBrooker macrumors 6502

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    #1
    I did a search but couldn't find a thread listing HD speed tests. If there isn't already one please add your test results here!

    Use the Blackmagic Disk Speed Test app which is free from the App Store.
    --- Post Merged, Mar 2, 2017 ---
    Well I have some interesting results. I have had 5, yes 5 MBPs now. The first three were all able to peak at over 2000 MB/s on both read AND write. But the latter two only manage 1800 or 1900 in the write tests.

    Call me paranoid, but the first three MBPs were sent to me via the Netherlands, whereas these last two have come direct from China (without even entering the Netherlands) - I wonder if the initial batch get 'tweaked' or are manufactured to higher levels (for the purpose of reviews etc?).

    The reason the others have been going back is because of uneven backlights and other issues that while not catastrophic, are not what I expect of a £3,000 machine.

    15", 512GB (then 1TB), 2.9Ghz, 4GB GPU
     

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  2. casperes1996 macrumors 65816

    casperes1996

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    #2

    There are natural variations from disk to disk even from the same fabrication batch. Furthermore there are margins of errors with tests and whatnot.
     
  3. iBrooker thread starter macrumors 6502

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    #3
    In that case I would expect results to be more sporadic - but first three excellent next few not so great? Certainly makes you go Hmmmm. And I would love for some tech site to investigate this..
     
  4. casperes1996 macrumors 65816

    casperes1996

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    #4
    Well, since 2k is the maximum the speed test can show, we don't know exactly how big the difference actually is, and 1,900 is brilliant as well.
     
  5. Sanpete macrumors 68020

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    #5
    There' been some speculation, with a little evidence, that the latest OS has slowed things a little. Might affect these scores too. Just speculation at this point.
     
  6. Samuelsan2001 macrumors 604

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    #6
    Is it still creating the spotlight index as it's new?? This will effect the results of this test give it a few days and try again. As others have said black magic tops out at 2000 MBP/s anyway and different manufacturers for the SSD may well cause a change as can an is update.

    It's still ridiculously fast don't worry about it.
     
  7. casperes1996 macrumors 65816

    casperes1996

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    #7
    This is also a very important factor to consider, yes. When performing tests, other activities should be minimised as much as possible to reduce interference, and for drive performance, iCloud syncing, Spotlight Indexing and all similar processes new devices go through can impact the score.
     
  8. Sanpete macrumors 68020

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    #8
    Curiously, some people have gotten better benchmarks while running another program at the same time.
     
  9. iBrooker thread starter macrumors 6502

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    #9
    That's a good point actually - although it was a stock system with just the basics; encryption and firewall on, and littlesnitch installed (so not sure whether spotlight would be indexing anything on a new/bare system?)
     
  10. casperes1996 macrumors 65816

    casperes1996

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    #10
    This can be explained by several factors and depends on what the benchmark is testing for. For instance, if you're testing for CPU, running a short program right before your main benchmark hits that gets the clock speed up so the processor doesn't have to go from idle to high-clocks in the benchmark itself can improve it slightly. With GPU tests, a similar benefit can be had, if whilst running the GPU test, you're running something on the CPU that makes sure it doesn't power-gate to conserve power, or in the case of some Macs, such as the iMac, forces the fans to run at a higher speed. With disk tests specifically it's most likely similar to the processor thing described initially or something similar. But in terms of comparing tests, it's easier to keep the conditions the same or similar, if the conditions are "This and nothing else". Especially because other programs can be doing different activities and the benchmarks could vary depending on what tasks the other programs perform when the test is run
    --- Post Merged, Mar 3, 2017 ---
    The moment you set up the user profile on a new system, Spotlight starts indexing it.
     
  11. iBrooker thread starter macrumors 6502

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    #11
    Ok thanks - I will look at the activity monitor when the next one arrives, and report back :)
     
  12. Samuelsan2001 macrumors 604

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    #12
    FileVault encryption may well affect this result as well.
     
  13. iBrooker thread starter macrumors 6502

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    #13
    This shouldn't be an issue in this case as all machines have had firevault switched on.
     

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