So it looks like I am going to try to upgrade my main boot disk to Mojave. Apple will only let me buy it if I have Mojave or newer. Second, I want to add to my setup on Mac Mini Final Cut Pro X. I am willing to bet that APFS is better than invoking the TRIM command in El Capitan's Unix shell.

For one thing, I wonder if the TRIM command that you gotta enable in El Capitan for SSD management is not as good as Apple's new SSD format APFS. However, going over to SSD internally, I think it's probably best that I use an OS higher than El Capitan. I have so much CPU bandwidth that I don't need more more more and the latest MacOS, and the CPU bandwidth is barely taxed the way I write and track.

It runs exceptionally well with DP 10.11. I have a well running Mac Mini Late 2012 2.6 Ghz i7 with 16 GB of RAM and I am about to drop two 1 TB SSD's into it from Crucial (MX500 series SSD). I've been on here a long time and grateful for the host James and Cohosts who are solidly here to help when I need them as well as you various nerds out there haha.

Os el capitan vs sierra