My macbook air disk speed test.

Discussion in 'MacBook Air' started by datfann, Oct 22, 2014.

  1. datfann macrumors newbie

    Joined:
    Aug 19, 2014
    #1
    I downloaded the Blackmagic disk speed test and the result was around 300 MB/s write speed and 650 MB/s read speed.I'm using the Macbook air mid 2013 1,3GHz i5 processor.Are these bad results and how can i improve them.Thanks
     
  2. ABC5S Suspended

    ABC5S

    Joined:
    Sep 10, 2013
    Location:
    Florida
    #2
    About normal. This is mine with a MacBook Pro retina 8 GB memory and 128 GB SSD
     

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  3. Carlos840 macrumors member

    Joined:
    Nov 5, 2013
    #3
    I get 315 MB/s write speed and 720 MB/s read speed on my brand new 2014 MBA, which is pretty much what most reviews mentionned, so i would say you are within the expected speeds.
     
  4. datfann thread starter macrumors newbie

    Joined:
    Aug 19, 2014
    #4
    I know but I watch the videos on you tube with the same Macbook and sam test and they all go around 450 write speed and 725 read speed and one even went 650 write speed.How come mine is lower
     
  5. Calot macrumors regular

    Joined:
    Aug 6, 2012
    #5
    That would be with bigger SSDs. The bigger ones are faster.
     
  6. ABC5S Suspended

    ABC5S

    Joined:
    Sep 10, 2013
    Location:
    Florida
    #6
    Mine is a 128 GB SSD and they are a tad slower than a 256 GB or even more so than on a 512 GB. My numbers fluctuate higher or lower all the time. I don't worry about it, since my boot time is around 9 to 10 seconds and shut down is about 1 to 2 seconds. Everything else is just fine. Yours is OK, so don't worry about it.
     
  7. Dweez macrumors 65816

    Dweez

    Joined:
    Jun 13, 2011
    Location:
    Down by the river
    #7
    Mine is a mid 2013 i7 8 gig 512 gig ssd.
     

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  8. capathy21 macrumors 65816

    capathy21

    Joined:
    Jun 16, 2014
    Location:
    Houston, Texas
    #8
    It all depends on size of drive and brand of vendor. I've used a 128 Samsung which hit over 600 but most of the newer 128's are SanDisk and they ar around 300 or so. You are in the normal range.
     
  9. slight32 macrumors member

    Joined:
    Jul 31, 2014
    #9
    I've just run the speed test, 205 write / 550 read. It's an early 2014 13" Air, 4gb / 128gb.

    Any idea why the speeds are lower than average? I've only had the machine for a week!
     
  10. enectrixx macrumors newbie

    Joined:
    Jun 25, 2010
    #10
    Wow, I'm only getting around 200 MB/s for writes and 530 MB/s for reads, could that be because I have FileVault enabled? It's a 2013 Air with a 128 GB SSD.
     
  11. copa, Oct 23, 2014
    Last edited: Oct 23, 2014

    copa macrumors member

    copa

    Joined:
    Nov 8, 2013
    #11
    Those are speeds that get reported for 128gb SSDs in the MBAs all the time. Those are normal speeds. The 256GB and upwards have faster write speeds in particular.

    mine's a 256gb from LG I think. Notice it's a tad slower than the bigger 512gig drive shown above.
     

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  12. Carlos840 macrumors member

    Joined:
    Nov 5, 2013
    #12
    Just out of curiosity, can you check in

    About this mac, more info, system report, storage, media name, and copy and paste the line?

    Wondering what brand SSD you have in yours?
     
  13. slight32 macrumors member

    Joined:
    Jul 31, 2014
    #13
    Media Name: APPLE SSD SD0128F Media Model:

    APPLE SSD SD0128F
    Revision: A222821
    Serial Number: 141711408942
     
  14. Carlos840 macrumors member

    Joined:
    Nov 5, 2013
    #14
    This means you have a SanDisk ssd, they are known for being the slowest ones...

    Mine is APPLE SSD TS0128F Media, which is the Toshiba drive which is the middle one speed wise.

    The fastest ones were the Samsung, but they are apparently not used in the 2014 model anymore.

    Not sure how you feel about exchanging your macbook, but it might be worth doing. On the other hand, there is no guarantee that the next one won't have the same SSD
     
  15. motrek macrumors 68020

    Joined:
    Sep 14, 2012
    #15
    Holy crap, any of these SSDs are 2-6 times faster than a hard drive at sequential reads and writes and hundreds of times faster at random accesses.

    Instead of downloading 3rd party programs to try to think of reasons to return your Mac, how about you just be happy that you have an awesome laptop?

    I bet you $1000 that if you didn't run this stupid benchmark program, you never would have known that you got a "slow" drive and it would have made zero difference in your life.

    It's like you're searching for problems.
     
  16. slight32 macrumors member

    Joined:
    Jul 31, 2014
    #16
    I just wondered why the test showed my SSD as being slower than average, I can't say it's a deal breaker. Swapping it is impossible anyway as it was the only one with an English keyboard (I'm a Brit expat in Turkey).

    Once replacement drives become available I'll be upgrading to a bigger one anyway, for now I'm enjoying not using Windows so am happy regardless.
     
  17. motrek macrumors 68020

    Joined:
    Sep 14, 2012
    #17
    There's basically no technical reason why your read speed would ever be slower than your write speed so if I had to guess, something was running in the background messing up the test while you were running it. I think if you run the test again you'll get different results.
     

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