AMD's Bobcat and Bulldozer

[informal]

what makes you say this?

high utilization of alu's is one of the hardest things to do. i doubt AMD has improved this dramatically, as it would require a drop in efficiency.

Read the AT article.It is the hardest thing to do indeed,but the way this machine is built allows it to go a bit further ahead of itself(with all the BP,data speculation,much improved out of order loads and stores capability etc). I guess the more in depth slides from HotCHips will shed more light on this subject later today.