SMT is less of a rose garden than you think. It's good for threaded performance (deemed "free" but not actually) but a b*tch to validate, especially for server environments.

I'm opposed to AMD putting SMT in- rethinking the whole core methodology (instead of just building off previous stuff) could yield a much more desirable INT performance increase. And without fab ownership, AMD better execute fast and temporarily give up on SMT until it gets to a much better financial situation.