I have a 2014 Mac Mini (2.6 dual core i5 version with 8GB of RAM) that has a 1TB HDD. Honestly, it is pretty slow, especially when I use Virtual Box to boot into Windows. It can take up to 5-6 minutes before I can get Windows to a usable state and that is simply terrible. In addition, iTunes, Office and other programs take more time than I think is reasonable to load as well. I don't do video editing or other "high end" tasks. Mostly I use it for Web, Music, Office and Virtual Machines. I am considering two options right now. One is to crack it open and replace the 5400 RPM drive with an internal SSD. The other is to add a external Thunderbolt SSD and clone my internal drive to that so I can use Trim vs USB 3 which I can't. So here are my questions. 1. At the moment the Mini is really only good for simple tasks. Is the HDD truly the bottleneck and would an SSD make the Mini usable? 2. If I go external with Thunderbolt, will I have problems with the Mini disconnecting the drive when it sleeps and issues when waking? 3. If I went USB3 external, would I have disconnecting and waking issues when sleeping? 4. If I install a new internal, does the Mini have the same problems as the iMac with fan speed issues due to replacing the internal drive? I am also considering adding an external Thunderbolt SSD to my 2013 iMac, but I have the same concerns with the sleep/disconnect/wake issue and would like some clarification as I especially don't want to open up the iMac as that is a real pain in the ***. Thanks for you help.