i’ve got a couple old emachines mintowers here, one was redone with a new (at the time) athlon ii.

solid cases for reuse, just a little tight on space inside and zero airflow intake from the front (across where the hdd bracket is). neither really matter if you’re not trying to put in a big video card and use ssd instead of hdd. so i just hang on to them in case i come across something new-ish to put in them.