SSD Performance based on size?

Discussion in 'MacBook Pro' started by Nabby, Sep 8, 2011.

  1. Nabby macrumors regular

    Joined:
    Jul 10, 2008
    #1
    I'm looking at a new MBP and am thinking about getting an SSD in it. I'm curious to know if the performance is consistent across the SSD drives, regardless of size. i.e. Does a 128GB SSD perform as well as a 256GB SSD?

    Thanks!

    Nabby
     
  2. DWBurke811 macrumors 6502a

    Joined:
    Jun 10, 2011
    Location:
    Boca Raton, FL
    #2
    In theory, a larger drive will perform better than a smaller one if all else is equal. But how much is very dependent on what drive it is.
     
  3. reputationZed macrumors 65816

    Joined:
    Mar 9, 2011
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    34°55′42″N 80°44′41″W (34.
    #3
    there is generally a performance falloff with the smaller SSd's ( 80 GB and smaller) as they typically use controllers with half the channels. Once you get over that gap I don't think size plays that big of a role.
     
  4. Nabby thread starter macrumors regular

    Joined:
    Jul 10, 2008
    #4
    Very interesting. Thanks for the information!

    Nabby
     
  5. AppleGoat macrumors 6502a

    Joined:
    Oct 14, 2010
    #5
    I may be wrong, but what I've noticed is that's there's greater write than read speed variance between small and large drives.
     
  6. vmachiel macrumors 68000

    Joined:
    Feb 15, 2011
    Location:
    Holland
    #6
    In the case of the agility 2 OCZ, the one that I have, the specs were as followed:

    40 GB:
    Max Read: up to 280 MB/s
    Max Write: up to 270 MB/s
    Sustained Write: up to 200 MB/s

    50-240 GB:
    Max Read: up to 285MB/s
    Max Write: up to 275MB/s
    Sustained Write: up to 250MB/s

    400-480 GB:
    Max Read: up to 250MB/s
    Max Write: up to 240MB/s
    Sustained Write: up to 200MB/s

    All models had: Random Write 4KB (Aligned): 10,000 IOPS
    So the middle size class preforms better.
     

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