I saw this little ditty on hardmac and thought it would be of interest: http://hardmac.com/niouzcontenu.php?date=2005-04-05#3865 As I have expected, due to the speed with which Intel was getting its first dual core processor out the door, it ain't pretty. Each core has to go out to the motherboard bus to communicate with each other. What's with that? They're only getting a 55% performance boost! Both AMD and IBM dual core offerings are expected to spank the Intel kludge, since both will provide on-chip buses between cores. In other words, they're doing it right.