512G rMB vs 256G rMB

Discussion in 'MacBook' started by iRun26.2, Apr 6, 2015.

  1. iRun26.2 macrumors 68000

    Joined:
    Aug 15, 2010
    #1
    Shouldn't the larger SSD be naturally a little faster?

    Could that also be contributing to the faster Geekbench scores?
     
  2. shenan1982 macrumors 68040

    shenan1982

    Joined:
    Nov 23, 2011
    #2
    Why would the larger SSD be faster?
     
  3. bibyfok macrumors 6502

    bibyfok

    Joined:
    Jun 14, 2012
    Location:
    France
    #3
    Because they use high end chips and controller on larger SSD.
     
  4. newellj macrumors 601

    Joined:
    Oct 15, 2014
    Location:
    Boston, MA, US
    #4
    My impression looking at SSD reviews over the last couple of years is that there is often a big break in speed between the 128gb SSDs and the bigger ones, but typically speeds flatten out from 256gb upwards.
     
  5. KrisLord macrumors 65816

    Joined:
    Sep 12, 2008
    Location:
    Northumberland, UK
    #5
    It normally depends on the number of channels the controller accesses simultaneously. If there are 2x as many channels in the 512 drive then I'd expect a speed difference. If there are the same number (but each channel has 2x the storage) then I'd not expect any speed difference. I don't know enough about Mac PCIe drives so not sure how the channels differ.
     

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