they are just dropping the amd chips in favour of the intel as IBM couldn't produce what was asked of them. The new intel machines will be able to dual run XP and OSX. But OSX will not be supported for PC machines. Their is a version of the OSX been hacked to work on pc's floating round, but at best can use i-tunes and thats about it. plug ins and drivers etc will not work and doubt there will be any support for them.