Hate to jump in here, but your information about A64 and Opteron demand is dated by a couple of months. Everything I've been reading lately seems to indicate that AMD is having a hard time supplying the market demand for A64s.
I'm not sure why that is, but I suspect that the knob wasn't turned far enough to the right on 130nm production, and now A64 production is getting caught up in the 90nm conversion. I could be wrong, but that would be my best guess.