i5 1.4Ghz with pre-Cambrian spinning rust -> $499
i5 2.6Ghz with pre-Cambrian spinning rust -> $699
i5 2.8Ghz with antique spinning rust -.$999
Low ROI ? Bohr, you must be smoking something dangerous, stop now!
I like macOS, but this puts me off: https://www.ifixit.com/Guide/Mac+Mini+Late+2014+Hard+Drive+Replacement/32815
Biting the hand that feeds IT
