>> I suspect AMD's end game is to eventually end dual-thread cores I think not. They're going to widen the fetch/decode in Zen 5. That will help refill the pip

>> I suspect AMD's end game is to eventually end dual-thread cores I think not. They're going to widen the fetch/decode in Zen 5. That will help refill the pipe after all those misprints and cache misses, but my not help latency in refilling. One of the best ways to handle stalls is to let "the other thread" execute. I suspect Zen 5 will get huge gains on branchy multi-threaded code but more modest gains on single thread. They're after performance per watt and per dollar, while Intel keeps aiming for top single thread performance and market segmentation - two things some of us don't care about. That said, I'm sure there is a market for a 4 or 8 core chip without SMT that has 50 percent higher single thread performance, and I won't be surprised if Intel provides such a chip.