If possible I'd get 32GB RAM to help store more GIS app working information in memory, and for longevity. If budget is a factor then as Lee_Bo mentions above, 16GB is probably OK. Since apparently the new Mac mini are RAM up-gradable, you could add more RAM later if you start to notice Memory pressure and swapping.
You've probably already confirmed this, but if not, suggest checking with the GIS app developer to ensure it is supported for MacOS, along with the other app requirements.
10-31-2018 06:10 AM