AMD did not reveal many details about its SMT capability and only said that its Bulldozer processors would support it in 2011. Still, it is rather likely that AMD’s approach may be somewhat different compared to Intel’s HT and may even be of the same kind like Sun Microsystems’ simultaneous multi-threading feature than supports execution of four threads on one physical core.Source: X-bit Labs
It is interesting to note that earlier AMD did not consider SMT to be a viable feature. However, it did admit that simultaneous multi-threading is a necessary feature of the future generations of microprocessors that significantly boosts performance.
AMD Bulldozer to feature simultaneous multi-threading technology (SMT)
Posted on Tuesday, Aug 25 2009 @ 19:32 CEST by Thomas De Maesschalck