I need to purchase server equipment for two different small businesses. (10-20 employees each). It seems like the "servers" offered by Dell are only different from a desktop in the fact that they use a Xeon processor and "ECC" memory. Can't I just get by with a desktop that has a core i5/7 and 16/32GB of regular memory? Servers will be for basic file / app serving - probably using Ubuntu Server distro, and will take requests from 5-10 desktops / laptops. THANKS !