TRIM on Samsung 840

Discussion in 'MacBook Pro' started by Shadow%20Mac, Dec 14, 2012.

  1. macrumors 6502

    Joined:
    Dec 28, 2007
    Location:
    Oakland, CA
    #1
    Just installed a 500GB SSD (Samsung 840) in my 2011" MacBook Pro. Do I need to enable TRIM support? How would I go about doing that? Is it something I should bother with or are the performance decreases I've heard about just a myth of misinformed tech-heads?
     
  2. macrumors regular

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    Jun 9, 2009
    Location:
    Chicago, Dirty South.
  3. thread starter macrumors 6502

    Joined:
    Dec 28, 2007
    Location:
    Oakland, CA
  4. macrumors 6502

    Joined:
    Sep 19, 2012
    #4
    Just installed a Samsung 840 500GB in my late 2008 MacBook Pro (2.8GHz Core 2 Duo, 8GB 1067 DDR3, OS X 10.8.2). Purchased the standard version of the 840 SSD, not pro version. Installed in the main drive bay next to the battery. Getting 210MB/s read, 270MB/s write out of the box without TRIM enabled. Same EXACT speeds with TRIM enabled via Trim Enabler app (after restart). Guess I will leave it enabled for now? Any recommendations here?

    Repurposed my old HDD with an OWC Data Doubler in the DVD optical bay. Carbon Copy Cloner to selective clone to the SSD for initial setup without any issues at all. (Never have had any issues with CCC - it's a fantastic program.) Using the optical bay HDD for media, photos, large file storage, etc. Have original system HDD in USB enclosure that I'll be using for backup/clones of the SSD.

    So far extremely happy I did this. Quieter, cooler, faster. Battery life has been phenomenal on this older laptop so far. Definitely longer lasting than with HDD/DVD previously. Did not do any hacks for shutting down the HDD sooner, etc. Left power settings alone and managed in the OS.
     
  5. macrumors 68040

    Joined:
    Dec 13, 2004
    #5
    trim prevents degradation of speeds over time. If you just installed the drive, no degradation has occurred yet.
     
  6. thread starter macrumors 6502

    Joined:
    Dec 28, 2007
    Location:
    Oakland, CA
    #6
    Just a month after my Samsung 840 500GB was installed, it died on me. No volumes recognizable, unrepairable by any disk utility, confirmed by the genius bar as a hardware error. The drive is still under warranty, so I'll get it replaced and sell it with my old laptop, as I just purchased a new one with integrated flash storage.
     
  7. macrumors newbie

    Joined:
    Nov 30, 2011
    #7
    Which version of firmware did you have installed in the Samsung 840 500gb?
     
  8. thread starter macrumors 6502

    Joined:
    Dec 28, 2007
    Location:
    Oakland, CA
    #8
    I'm not sure about the version number, but the drive had a boot camp partition. Within Windows, I installed Samsung's Magician software, which told me that my firmware was up to date (this was, of course, before the drive failed)
     
  9. macrumors 68040

    Orlandoech

    Joined:
    Jun 2, 2011
    Location:
    Salt Lake City, UT
    #9
    See the SDD Tweak Guide in my Sig for performance tweaks and TRIM.
     
  10. macrumors newbie

    Joined:
    Nov 30, 2011
    #10
    Thanks guys.
    Is advisable to enable TRIM (with unofficial applications) in my Macbook Pro 2011 with Mountain Lion?
    My SSD is 500gb Samsung 840 :confused:
     
  11. macrumors regular

    CarreraGuy

    Joined:
    Jan 15, 2013
    #11
    Scary, I'm coming up on a month with mine :eek: Any details up to the point of death? I have trim enabled with 64-bit Snow Leopard and no bootcamp so far so good <knock on wood>
     
  12. macrumors 6502

    Joined:
    Jan 14, 2013
    #12
    The best advice you can get is to to keep an up to date back up... this is valid for any HD... You can't predict the day they will fail but you can be ready for it
     
  13. thread starter macrumors 6502

    Joined:
    Dec 28, 2007
    Location:
    Oakland, CA
    #13
    Trim Enabled, 64-Bit ML

    Honestly, I think it was random fluke. Samsung has a good reputation with the SSD
     
  14. macrumors member

    Joined:
    Jun 12, 2012
    #14
    I had the same problem my 840 dead on me, around also a month, i was using Chameleon SSD Optimizer. So not sure should i still use it....
     
  15. Rhyalus, Apr 26, 2013
    Last edited: Apr 26, 2013

    macrumors 6502

    Rhyalus

    Joined:
    Mar 4, 2011
    #15
    So rather than revive an older thread....

    I have the Samsung 840 500GB and enabled trim with Trim Enabler a couple of months ago. No problems at all.

    I know I checked subsequently and all was still ok, but today I ran Trim Enabler on a whim, and rather than it saying that "everything is super", it said that trim was not enabled.

    I enabled it, rebooted, and all is well again.

    Any ideas what could trigger trim being turned off?

    EDIT: Just did some searching and now see that OS updates can switch it off. Anything else that might do this that I need to watch out for?

    Thanks,
    R
     
  16. macrumors regular

    Joined:
    Jul 12, 2012
    #16
    Usually you need to re-enable trim after updating your os.
     

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