We hope this information helps you decide what is best for you.I have a MacBook Pro 13' (Mid 2012) with i7, 8GB RAM and OS X El Capitan/macOS Sierra installed.

If you are more of a power user who does picture and video editing or other tasks that require a lot of writes, enabling Trim might be more useful to you, because constantly writing workloads do not always allow for regular maintenance from garbage collection. If you are a casual user sho uses your system for Internet, email, and other light tasks, garbage collection built into the firmware of Crucial SSDs will probably be plenty to keep your SSD running fast and healthily. The internal garbage collection algorithms on Crucial SSDs manage deleted data quite effectively. The question of enabling Trim really has to be answered by the user. While Trim is generally good for helping to manage SSD performance and wear in most desktop and notebook environments, it is important to note that Trim is not critical and the improvement may only be marginal. Please refer to support for your OS for details on using Terminal to enable trimforce. We have had users report that activating Trim using the trimforce command increases system boot times by about 10 seconds, though speeds during all other system use appears to be as fast as without Trim. If you decide to enable Trim using the trimforce terminal command, it is suggested you back up your data first. According to Apple®, enabling Trim using the trimforce terminal command is done completely at the user’s risk.

As of OS X version 10.10.4, the trimforce command is available in Terminal to enable Trim without the use of third-party software.

Enable trim mac os sierra