Originally Posted by darkphantom
^oh haha, maybe, but unless that other poster is getting >3.2GB of ram...I don't think he needs a 64-bit OS
I'm not sure how you came up with that number... A 32-bit register can address up to 4GB of RAM directly (or the maximum size of an unsigned int):
bash-3.2$ perl -le 'print 2**32'
64-bit architectures offer other advantages as well, including faster processing for some tasks.