Apple (Samsung) 128GB SSD vs. OWC 240GB

Discussion in 'MacBook Air' started by JPamplin, Aug 24, 2012.

  1. JPamplin, Aug 24, 2012
    Last edited: Aug 24, 2012

    JPamplin macrumors 6502


    Mar 12, 2009
    Nashville, TN
    OK, I've got the 240GB SSD installed in my 2011 MBA now. I thought I'd post the comparison shots of performance that some of you have asked for.

    Interestingly, the OWC SSD (which is driven with a SandForce chipset) doesn't support TRIM. Most say it's not needed - I'm wondering if I should enable it or not. For the time being, it's off. Also interestingly, the write speed is not really different - it's the read speed that really shot up due to it being a SATA3 device.


    Read: 259.8 MB/s
    Write: 244.5 MB/s


    Read: 484.6 MB/s
    Write: 263.6 MB/s

    Don't notice a huge difference in performance (they were both fast to begin with). But now I have the space to put in a 50-60GB Boot Camp partition, which is a big deal to me. Not sure yet on battery drain, but it does seem a bit warmer than before.

    Hope that helps. Question: Has anyone ENABLED TRIM for an OWC SSD, and has it made a difference in any way?

    Attached Files:

  2. midtownhd macrumors member

    Jun 25, 2012
    If it shows better performance, you should enable it
  3. Wokis macrumors regular

    Jul 3, 2012
    Stockholm, Sweden
    That the perceivable difference between the two in most normal scenarios is small doesn't surprise me. I don't notice much of a real-life difference between my Intel x25-M, Intel 510 and the Toshiba SF in my MBA.

    I find in hardware forums that most people can agree that sequential read/write speeds doesn't seem to make much of a noticeable impact in regular tasks (unless they're absurdly high/low, of course). Until the disks have enough space to serve as video scratch disks or similar, the sequential speeds feel mostly like a thing for bragging rights.
  4. plucky duck macrumors 6502a

    Jan 5, 2012
    For me personally, sequential read/write doesn't mean much to me since time is on my side and I have a lot of it to waste. My computer is used mainly for entertainment purposes. Having said that, I appreciate random read/write performance more since most of the time the ssd remains pretty idle other than for OSX access.

    Enjoy your new found space though, must feel like moving from a condo to single unit housing. :)
  5. firefire macrumors newbie

    Dec 24, 2011
    I had the 3G 180 GB version of the OWC SSD for a 2011 11" Air but would wake up to a stuck screen when resuming from sleep. I would also get delays in waking from sleep, whereas wakeup with the Toshiba SSD would be nearly instant. Of note, I had hibernation disabled with both drives.

    Are you encountering any of these issues? Maybe I should exchange this one for another one... :confused:
  6. scarred macrumors 6502a

    Jul 24, 2011
    The OWC drives suck too much power. I couldn't stand losing 45 minutes to an hour of battery life, so I put the original ssd back into my mba 2011.
  7. mpe macrumors 6502

    Sep 3, 2010
    OWC is also significantly slower when using FileVault encryption.
  8. raftr macrumors regular

    Oct 18, 2007
    1. There is a minimal speed increase.
    2. The power drain (with OWC 6G blade) is very noticeable in battery life.
    3. My OWC SSD failed after less than 6 months of use.
  9. JPamplin thread starter macrumors 6502


    Mar 12, 2009
    Nashville, TN

    I'm noticing less battery life and definitely more heat on the bottom under where the SSD is installed. We'll see.

    I might use the 240GB in my Hackintosh if there's too much of an issue. Anyone else have less battery?
  10. atMac macrumors 6502

    Jun 20, 2011
    I assume that the drain is from powering denser or more chips on the board of the SSD, same with the increased heat.

    The battery drains faster, but your disk can read and write more data in that time than your original drive could with the longer battery. It's a give and take. More storage/drive speed or longer battery.
  11. TC25 macrumors 68020

    Mar 28, 2011
    ...and the search for a free lunch continues.
  12. mayuka macrumors 6502a


    Feb 15, 2009
    One silly question from me...

    How did you install Mountain Lion when the Rescue Image is on the other SSD? :confused:
  13. robvas macrumors 68030

    Mar 29, 2009
    Remember the Sandforce drive will be faster on compressible data - closer to 400-500MB/s
  14. atMac macrumors 6502

    Jun 20, 2011
    There is a key combo to boot from the internet and install.
  15. jbzcar macrumors regular

    May 11, 2012
    Or make a bootable USB key. I keep one around for re-installs.
  16. mayuka macrumors 6502a


    Feb 15, 2009
    Can I make one right from the rescue-image or do I need to download ML from the App Store (again)?
  17. jbzcar macrumors regular

    May 11, 2012
    You need the download from the App Store.

    Then use this little utility and you will be good to go. :)
  18. paul-n macrumors regular

    Jul 12, 2012

    You can also clone your system to your new SSD, using Carbon Copy Cloner or Super Duper, than you don't need to reinstall your system.
  19. Agent-P macrumors 68030


    Dec 5, 2009
    The Tri-State Area
    Does anyone know the answer in the OP regarding whether TRIM is needed with the OWC SSD or not?
  20. atMac macrumors 6502

    Jun 20, 2011
    Trim is not needed, the drive has built in Garbage collection.

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