Mac OS X 10.6.8 Brings TRIM Support for Apple SSDs, Graphics Improvements

Discussion in ' News Discussion' started by MacRumors, Jun 27, 2011.

  1. macrumors bot


    Apr 12, 2001

    One item of interest regarding last week's Mac OS X 10.6.8 update reveals that Apple has enabled TRIM support for solid state hard drives shipped in Apple-produced configurations. TRIM is a feature that allows solid state drives (SSDs) to automatically handle garbage collection, cleaning up unused blocks of data and preparing them for rewriting, thereby preventing slowdowns that would otherwise occur over time as garbage data accumulates.


    Support for TRIM has been included in OS X Lion since its early developer builds, but Apple has apparently decided to push the feature out to Snow Leopard users as well. The new native TRIM support does appear to limited to stock Apple drives, as users who have installed third-party SSDs into their machines have reported that TRIM is not enabled by the update.

    Mac OS X 10.6.8 also appears to have brought graphics improvements that have been most apparent to gamers. According to one set of benchmarks, Mac OS X 10.6.8 outperforms Mac OS X 10.6.7 in many measure of graphics performance, sometimes by a significant margin.


    User reports in the MacRumors forums and the Steam forums similarly point to significant improvements in graphics performance under real-world conditions. A number of users has actually reported significant declines in graphics performance with Mac OS X 10.6.7, so improvements with the new Mac OS X 10.6.8 are certainly to be welcome.

    Article Link: Mac OS X 10.6.8 Brings TRIM Support for Apple SSDs, Graphics Improvements
  2. macrumors newbie

    Jun 13, 2007

    im pretty sure they shipped TRIM in 10.6.7

    i havent upgraded to 10.6.8 yet and I have TRIM enabled...
  3. macrumors regular


    Jan 10, 2006
    TRIM was in my MBP 15, early 2011 running a special build of 10.6.7 right out of the box.
  4. macrumors 6502a

    Aug 21, 2010
    Athens, Greece
    graphics improvement, good news for sandy bridge macbooks limited to the hd3000! and ofc for everyone else ;P
  5. macrumors 604


    Feb 23, 2010
  6. macrumors 6502a

    Aug 3, 2010
    Nice and unexpected updates to me. :) I thought it was mostly about minor security and bug fixes. And Lion upgrade support.

    So I guess I'll switch to an SSD drive now, and play Halo 'til my fingers bleed! Yaaay!
  7. macrumors 68000


    Jun 1, 2011
    Planet earth.
    Don't care for TRIM support unless its for Intel, OCZ and other superior third party SSD drives. Apple's toshiba rebranded drives are a joke.

    What is their excuse for not supporting other drives?
  8. macrumors member

    Jan 22, 2010

    Tell me whats the SC2 improvement and I will believe.
  9. macrumors 6502a


    Dec 16, 2010
    My MBA 11 with stock 128GB SSD on OS X 10.6.7 shows "TRIM Support: No" in System Profiler.

    Waiting to install 10.6.8 in case there were bugs in the build. So far, I have not read anything bad about it.
  10. macrumors 6502a

    Jan 27, 2005
    With the TRIM I'm curious to as whether or not OSX says TRIM enabled if the user is sporting a SSD with a SandFore (trim handled by controller). Because "as users who have installed third-party SSDs into their machines have reported that TRIM is not enabled by the update" might not matter because how many of them are having the controller do the TRIM already?
  11. macrumors 6502a

    Aug 3, 2010
    Yes, that sucks for those who've gone through that trouble. I hope a whitelist can be found in the OS and somehow hacked, in case this lack of support is "artificial" (it sure sounds like it because TRIM support is simply about issuing a command to the controller, right?). Not something I'd do, but something I suppose those with balls big enough to hack their hardware might be interested in.
  12. finalcut, Jun 27, 2011
    Last edited: Jun 27, 2011

    macrumors 6502

    Oct 9, 2007
    Quebec, Canada
    Did anyone try the trim enabler application on 10.6.8 with third party SSD?

    edit: nevermind, a new version was released by the author
    edit2: just applied the trim enabler and it is working now on 10.6.8
  13. macrumors newbie

    Nov 5, 2010
    10.6.8 still has no love for my TS256A :(


    Capacity: 251 GB (251,000,193,024 bytes)
    Model: APPLE SSD TS256A
    Revision: AGAB0202
    Serial Number: 799S106GT0SZ
    Native Command Queuing: No
    Removable Media: No
    Detachable Drive: No
    BSD Name: disk0
    Medium Type: Solid State
    TRIM Support: No
    Partition Map Type: GPT (GUID Partition Table)
    S.M.A.R.T. status: Verified
    Capacity: 209.7 MB (209,715,200 bytes)
    Writable: Yes
    BSD Name: disk0s1
    Macintosh HD:
    Capacity: 250.39 GB (250,387,783,680 bytes)
    Available: 72.08 GB (72,084,054,016 bytes)
    Writable: Yes
    File System: Journaled HFS+
    BSD Name: disk0s2
    Mount Point: /
  14. zin
    macrumors 6502

    May 5, 2010
    United Kingdom
  15. macrumors 6502

    Oct 16, 2009
    TRIM is an OS-related feature. It's not available for use unless the OS (or in some cases another application within the OS) supports it.

    You're probably thinking of how some SSDs implement their own garbage collection, which doesn't require OS support. The benefit of TRIM is that the OS is able to essentially handle the logistics of garbage collection, which results in better long-term write performance.
  16. macrumors newbie

    Aug 22, 2005
    I'm thinking about adding an optibay (with a 750gb 7200rpm drive) and a 250gb SSD for the os in my MBP.... Is this TRIM something i should worry about?
  17. macrumors newbie


    Jun 17, 2011
    Support for only Apple SSD's? That sucks! Does anyone know if third party drives have trim support in Lion?
  18. macrumors 6502

    Jun 26, 2010
    TRIM support is possible to enable for most SSDs, just go for it! :D
  19. macrumors 6502

    Sep 9, 2009

    Thanks to TRIM enabler I have TRIM support on my MacBook Pro late 2008 model on a 512 GB Kingston SSD.

    Any running a non Apple SSD should get this on their Mac fast.
  20. arn
    macrumors god


    Staff Member

    Apr 9, 2001
    Update: To clarify Apple's TRIM support, the new MacBook Pros released in February shipped with a special build of Mac OS X 10.6.6 that included TRIM support for Apple SSDs. But that TRIM support had not been extended to all SSD-configurable Macs until the release of Mac OS X 10.6.8 last week.
  21. macrumors 6502a

    May 26, 2010
    Boston, MA
    Apple is not in the business of writing firmware for every storage vendor's devices. Apple has created support for TRIM in the operating system. Get on your device's manufacturer's case for adding support for it in OS X.
  22. Moderator


    Staff Member

    Apr 2, 2008
    How easy (or hard) does anyone think this would be to 'hack' to work with third party drives?
  23. macrumors G4

    Oct 23, 2010
    Windows 7 supports TRIM on a wide range of SSDs, and there are third party hacks that enable TRIM on any SSD where the firmware supports it (which is almost every drive shipped now). It wouldn't be difficult for Apple to do the same.
  24. macrumors newbie

    Jun 13, 2007
  25. macrumors 68040


    Aug 31, 2007
    Land of the Free-Waiting for Term Limits

Share This Page