Agreed on the 28nm. I've held off on a gpu upgrade for a long time now purely because I didn't want a 40nm product. With that being said, doing the math you can see that GCN would have to be drastically more efficient than VLIW to compete with GK100. From everything we've heard, it seems that the majority of changes were done with the workstation market in mind (impyling that I don't think we'll see this round go to AMD).