OS X Lion has SSD TRIM support

Discussion in 'MacBook Air' started by DarwinOSX, Feb 25, 2011.

  1. DarwinOSX thread starter macrumors 65816

    Joined:
    Nov 3, 2009
    #2
    In case you don't know what that is

    "What’s the big deal with TRIM support? To put it simply, operating systems like Snow Leopard that don’t have TRIM support will treat solid state drives as regular, spinning drives when writing and deleting blocks of data. Snow Leopard doesn’t exactly know it’s dealing with an SSD, and while you’ll notice incredible performance improvements in daily usage, the same performances will slowly degrade over time without TRIM support. TRIM correctly tells the operating system which blocks of data are no longer in use in the solid state unit, and the OS passes the information along to the SSD controller so it can wipe blocks internally."
     
  2. GekkePrutser macrumors 6502a

    GekkePrutser

    Joined:
    Aug 18, 2005
    Location:
    Ireland
    #4
    Hmm that's not good for the current MBA owners because neither the Toshiba (TSxxxC) nor the Samsung (SMxxxC) SSD's in currently shipping models support TRIM :(
     
  3. DeusInvictus7 macrumors 68020

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    Aug 13, 2008
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    Kitchener, Ontario
    #5
    Yeah but hopefully once Apple lets third parties sell aftermarket SSDs they'll support TRIM. Like the OWC ones, those ones support TRIM.
     
  4. KPOM macrumors G5

    Joined:
    Oct 23, 2010
    #6
    Actually, they do. You can tell if you check from within Windows in Boot Camp. The current version of OS X just automatically reports "No" for TRIM support.
     
  5. GekkePrutser macrumors 6502a

    GekkePrutser

    Joined:
    Aug 18, 2005
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    Ireland
    #7
    You're right, sorry. I didn't realize the System Profiler just fakes it. That's great, it means a bit of a boost for the current-gen MBA's when Lion comes out (or at least they're less likely to suffer performance degradation).
     
  6. rkheyfets macrumors regular

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    Dec 16, 2010
    Location:
    NYC
    #8
    Exactly this is great news!
     
  7. jaw04005 macrumors 601

    jaw04005

    Joined:
    Aug 19, 2003
    Location:
    AR
    #9
    MacBook Air SSD under Lion.
     

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  8. vincenz macrumors 601

    vincenz

    Joined:
    Oct 20, 2008
    #10
    I'm sure the degradation is pretty minor and it's just overhyped here. If it were that bad, apple would have a crapstorm on their hands in a year. Wouldn't worry about it.
     
  9. DarwinOSX thread starter macrumors 65816

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    Nov 3, 2009
    #11
    Its not as significant now as it used to be but its not exactly minor either.
     
  10. Chip NoVaMac macrumors G3

    Chip NoVaMac

    Joined:
    Dec 25, 2003
    Location:
    Northern Virginia
    #12
    Good news for us MBA 2010 owners... So when is Lion expected to ship?
     
  11. Psilocybin macrumors 6502a

    Psilocybin

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    Jan 16, 2011
    Location:
    Ontario, Canada
    #13
    Summer
     

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