My 2008 Mac Pro is still going strong thanks to a 500GB SSD that I installed about five years ago. It needed a special little enclosure to make it fit the 3.5-inch bay, and then some shenanigans to clone to old HDD, but it works like a charm. My decade-old Mac boots up so fast that my browser is open before it has even connected to the WiFi network. On the downside, 500GB is not enough space anymore, and I've been progressively transferring things to the other internal hard drives to avoid running out of room, which kind of defeats the purpose. Just this week I had to work out how to create a symlink so that my iTunes backups would go to another drive, since they were taking up 150GB of the SSD. With a NVMe, I could get a 3.5-inch adapter and pop it in, with the option of adding another, and finally have enough room for all my stuff!







