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by usrusr 693 days ago
I consider SMT a relic left over from the days when CPU design was all about performance per square millimeter. We are in the process of substituting that goal with that of performance per watt, or in the process of slowly realizing that our goals have shifted quite a while ago.

I really don't expect SMT to stay much longer. Even more so with timing visibility crosstalk issues lurking and big/small architectures offering more parallelism per chip area where single thread performance isn't in the spotlight. Or perhaps the marketing challenge of removing a feature that had once been the pride of the company is so big that SMT stays forever.

1 comments

Intel is removing SMT from their next gen mobile processor.

My guess is this will help them improve ST perf. We will see how well it works, and if amd will follow