well im not sure if yall have heard but dell is now going to put amd's in there machines as well as intel's.
For now Dell is ONLY offering AMD Opterons in their servers, not in any desktop or notebook PC. Dell saw how alot of the server buying world was dumping Intel like a bad habit and flocking to vendors with AMD in their servers.
I doubt AMD will go with ATI. At least in my mind, it has always been Intel+ATI+Windows for the simple minded comsumer (funny how that is exacly what I have) and AMD+NVIDIA+Linux for the hardcore gamers.