Just like the Pegasos I, the AmigaOne SE/XE can take up to 2 GiB RAM. It's picky about it, though.
> that change [...] took a lot of work and complete migration to [...] PPC64 [...]
PPC32 is only 4 years older than PPC64 and has been superseded by PPC64 only in the last few years. So PPC32 and PPC64 had been lively supported by operating systems in parallel for at least 15 years without a general migration attempt.
