> I never changed it, but upgrade to upgrade, it is a completely different machine than it once was (it started off as a 486!)
Nit: You can believe that story, but there's zero chance that at some point you didn't upgrade the case, motherboard, CPU and RAM possibly at the same time. If you replace 90% of what makes a computer, does it make sense to say you "never changed" it? At what point do you consider it "changed"?
This Framework desktop also lets you swap motherboard, CPU and RAM in one go, why does it not fit your definition?