On the other hand a lot of use cases get high speedups from SMT (eg "AMD’s implementation of simultaneous multithreading appears to be power efficient as it ach

On the other hand a lot of use cases get high speedups from SMT (eg "AMD’s implementation of simultaneous multithreading appears to be power efficient as it achieves 41% additional requests per second while consuming only 7% more power compared to the skewed baseline" in https://blog.cloudflare.com/measuring-hyper-threading-and-turbo-boost/ https://blog.cloudflare.com/measuring-hyper-threading-and-tu...) Seems Intel is maybe just not very good at it.