My iMac is now 9 years old, it’s had a few upgrades - 500gb SSD, 3TB drive, 12 GB ram and it still works, just very slow rendering video in premiere pro and previewing photos in Lightroom. Photo mechanic is a much faster option for previewing photos so leaves the slow video editing as the main reason to upgrade. I want to keep with Mac so I’m thinking of a new Mac mini and keeping the iMac to use as a screen. Thoughts? Any other ideas? And a specific question will a usb c / thunderbolt 3 to Mini DisplayPort allow me to use the old iMac screen? It looks like it should, does anyone know for sure?