Re: If I replace my mobo, what else do I need to replace
If you got a new mobo, you would need a new processor, as the sockets have changed. But now most mobos have went to 24-pin power supplys, so you would either need a new PSU or a 20-pin to 24-pin adapter. The RAM might change, depending on whether or not the slots change. But that should be all that changes.