Update 2: A number of users of pre-"Late 2010" MacBook Air models have reported that Mac OS X 10.6.8 does not enable TRIM on their machines. 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. 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. 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. Syntax trimforce verb verbs enable Start sending TRIM commands to AHCI-attached third-party drives. User reports in the MacRumors forums and the Steam forums similarly point to significant improvements in graphics performance under real-world conditions. Enable TRIM commands on third-party solid-state drives. 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. Apple appears ready to allow third-party solid state drives (SSDs) to use TRIM, an OS-level tool for reclaiming. Step 2: Once you have done that, you are required to right-click 'Command prompt' and run it as administrator. Step 1: In the first step, you need to click the 'Start' button on your system and type cmd. Mac OS X 10.6.8 also appears to have brought graphics improvements that have been most apparent to gamers. Third-party SSDs to get TRIM support in OS X El Capitan, possibly Yosemite 10.10.4. To enable TRIM on SSD via command prompt. 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. Enabling TRIM is one of the best ways to maximize the life of your solid-state drive, but OS X doesn't support it out-of-the-box. 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. 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.
One item of interest regarding last week's Mac OS X 10.6.8 update reveals that Apple has enabled TRIM support retroactively for solid state hard drives shipped in Apple-produced configurations.