Even though this podcast went for three hours, there are many things I wish I'd explained better. So I will attempt a better explanation of my kind-of-throwaway Amdahl's Law comment, as the situation is pretty interesting:https://twitter.com/oxidecomputer/status/1221804818030706688 …
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Because in-order cores are slower than out-of-order cores, potentially *much* slower in some cases. But people decided to do that. And this runs afoul of Amdahl's Law ... with it you should see clearly that making B twice as slow as it could be (or whatever) is going to be
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much worse than making A faster, in almost all cases, unless B is a tiny part of your program, which it never is, especially for games. Both consoles made anti-Amdahl tradeoffs; I think both would have been much better with just a single out-of-order CPU at the same price point.
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We do still have a tradeoff though, or so it seems: fewer cores at higher clock speed vs more cores at lower clock speed.
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A single deeply pipelined core might have been better at the time than multi-core. But don't you imply above that when making that decision, they were already lagging on throughput bang-per-buck for pipelining? It sounds less like we lost the knowledge than that we ran out runway
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