This is pointless advice. The PS3 actually has games out for it now, so backwards compatibility isn't needed anymore, and it's also not much help. If you do want one with backwards compatibility you want one with 4USB ports instead of 2. That's how you can tell if it has backwards compatibility, not the hard drive size.IamSofaKingRaw said:EDIT: Get the one with backwords compatiblity, I think that one is either 80 or 120 gigs.