Ooops: AMD are going to support SMT - its in their 2011-2012 road map! However, they don't call it SMT, they think they'll get away with calling them cores. It is two small integer cores sharing fetcher, decoder, L2 cache, and a single FP unit.
>Then in 2011, we plan to introduce Interlagos...we’re designing some shared components that help reduce power consumption and die size, but you won’t see us sharing integer pipelines, the meat of the core.