Because for a large number of workloads, hyperthreading gives real performance improvements. The vast majority of consumers aren't running compute heavy worklo

Because for a large number of workloads, hyperthreading gives real performance improvements. The vast majority of consumers aren't running compute heavy workloads that are more amenable to SIMD work (which it sounds like this might be) than the sort of highly branching, often stalled work that general purpose programs do.