IBM simply didnt care about producing PPC chips, Intel is clearly happy to have Apple as a customer, IBM was all about producing gaming and Server chips becasue that is where they figured they would do best so until IBM started caring that they were supposed to be turning out chips for apple, which they never did. So what did apple do bitch slap IBM and basically saying after trashing Intel for all these years were dumping these power hungry chips and switching to something that could allow us to become a major factor in computer sales. Granted the PPC chip did finally reach 3. GHz the new Xeon are going to be blazing and the real question is will you be able to stick them in a mac pro, and if you can... wow...