The Microsoft/AMD connection. First of all, the recent comments about Microsoft's 64-bit operating system that are starting to crop up in blogs [<- Link to neowin] and the British press are not lost on Intel. Also, Microsoft's long-standing and cozy relationship with AMD—Intel's most hated enemy—cannot make the chip leviathan happy. Simply put, Intel would love to screw Microsoft. Even the possibility that Microsoft might eschew the Itanium processor for the Athlon 64 cannot sit well, and Intel has to do something to get the world back on the Intel/Itanium fast track. Enter Apple.
http://www.pcmag.com/article2/0,4149,1007215,00.asp