eg. how effective the bus/memory is used with almost NO performance loss and the same time HUGE improvement in imagequality...
Again, this is exaggerating. It might look good to you, but not to other people. A majority of people still buy Nvidia based cards, and if the image quality difference between Nvidia cards and ATi cards were that great, then don?t you think that maybe, just maybe, a web site like, as an example, Anandtech would start emphasizing this vital piece of information. It's a myth if you ask me, especially the "2D quality" myth. It depends on your monitor, and it depends on your resolution.
I think I've read that AMD is considering outsourcing some of their fab work to TSMC. TSMC is usually the leader in putting products out with a lower micron spec, but they aren't putting out the amount, complexity, and yield that someone like INTEL does.
Actually, the rumors are that AMD is considering outsourcing to UMC, TSMC's competition. Also, TSMC IS "putting out the amount, complexity, and yields" that Intel is, except times 3. Go to tsmc.com for more information. They are by far the largest semiconductor foundry in the world.