Samsung 830 128GB vs 256GB Write Speed Diff

Discussion in 'MacBook Pro' started by jbsmithmac, Dec 4, 2012.

  1. jbsmithmac macrumors regular

    Joined:
    Sep 11, 2011
    #1
    Why is there a 60MB/s write speed difference between the 128 and 256GB model of the samsung 830?

    Samsung's site states the 128GB model as 320MB/s and the 256GB model as 400MB/s.
     
  2. T5BRICK macrumors 604

    T5BRICK

    Joined:
    Aug 3, 2006
    Location:
    Oregon
    #2
    If I recall correctly you are using a 2009 model MBP. If this is te case, the write speed isn't going to matter, you'll be capped at about 260MB/s read/write.

    I think technically it is because the lower capacity drive has less storage chips so it isn't able to take advantage of as many channels as the larger drive.
     
  3. jbsmithmac thread starter macrumors regular

    Joined:
    Sep 11, 2011
    #3

    Yes your correct about my machine that I've been asking about. Regardless I wondered why...its the same model just different size.
     
  4. T5BRICK macrumors 604

    T5BRICK

    Joined:
    Aug 3, 2006
    Location:
    Oregon
    #4
    Yeah, I realized I didn't really answer your question, so I edited my post. :)
     
  5. jbsmithmac thread starter macrumors regular

    Joined:
    Sep 11, 2011
    #5
    I see that now.

    Well that makes for a confused consumer (think future proofing, other machine, etc). Thinking that the models are the same (even their part number) with the exception of the size designation of the model.
     
  6. paul-n macrumors regular

    Joined:
    Jul 12, 2012
    #6
    Most SSDs have their full performance first with 256 GB capacity, all below usually have less chips. 128 GB versions are a bit slower, but 64 GB models are much slower.
    Samsung is using 16 Flash chips on their 256 GB version and only 8 on the 128 GB model.
     

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