In my eyes, the core duos are technically 64-bit processors since each 32-bit processor is processing 32-bits of data from a different thread at one time (True parallel execution). (http://www.intel.com/products/proces..._discover2.htm) I guess Intel made dual core processors since they knew that most software will not be compatible or will have compatibility problems with a pure 64-bit processor like AMD.
Gallatin was in on of the P4 EEs. Gallatin was made for Xeons. But now that new xeons are out (woodcrest), the Xeons will kick AMD's Opterons. LK, if you can, get your hands on two Woodcrest Xeons 1333Mhz FSB based on the Core architecture. you can find them on the egg