@fishy_fiz
"Why would A-eon make a board supporting 16* the memory the os its designed for?"
x86/x64 OS roots are from 640k system, so OS can evolve, better not limit the HW too much.
A-eon has but signifficant effort to Linux for their HW and also AOS is breaking the 2GB barrier. (IIRC, PA6T can already address 16 or 32GB, P5020 can address 64GB)