I have a home file server which was previously running on an Athlon XP cpu (Socket A). The operating system on it is Ubuntu 10.04 (LTS), 32-bit, server-flavor. I believe the motherboard has died and am looking for something fairly modern as a replacement, like a Core i3 or Athlon II. If I get 64-bit hardware, will I be able to just plug in the new mobo, cpu, and ram into the machine and boot it up? Would there be other problems with such a large jump in motherboard technology?
If it is possible, I realize that I won't be able to use any of the 64-bit advantages without installing a 64-bit OS. It would just be nice to go in and save configuration files and properly prep for an OS upgrade, since this is an unscheduled hardware upgrade.