The Atom 230 (which I have) is 32 bit. The Atom 330 is 64 bithttp://www.phoronix.com/scan.php?pag...ty_pae64&num=1 for lots of benchmarks comparing 686, 686PAE and x64. That atom is one of the few that's 64bits so who knows what improvement you'd see with a 64bit install. You must attempt it in the name of science!
I almost spent the extra $10 to $15 for the 330, but I prefer canned soup to ramen noodle