Depends on the machine. Big desktop systems and servers yes, but early Atom-based netbooks/"nettops" are 32-bit based and could still be useful as thin clients

Depends on the machine. Big desktop systems and servers yes, but early Atom-based netbooks/"nettops" are 32-bit based and could still be useful as thin clients or for very light office work. You won't want to run a modern web browser on them though.