. . and at the higher end Intel's Itanium misadventure is costing them plenty, though Xeons are still selling well.
I've built only a few Intel machines for many years, all for a CAD house. Intel used to have better floating point performance, it doesn't now but these guys still want Intel.
Right now I'm struggling to get OS/2 running on a Pentium 4 machine (never had problems with AMD). This machine was built for the CAD house but diverted in an emergency to serve a year as a temporary server at a client's site. It's back and now it's mine so I'm trying to use it.