Comments by "eDoc2020" (@eDoc2020) on "Every Modern CPU Is Still Fundamentally Broken" video.

  1. All the P6 derived processors (including all three versions of Pentium III) have speculative execution.
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  2. From the A53's Wikipedia page: "4 KiB conditional branch predictor, 256-entry indirect branch predictor".
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  3.  @mohammedgoder  More like 25-28 years. On the Intel side the Pentium Pro and successor* CPUs are affected. I believe the only exception is the older Atom CPUs like the N270 and D525.
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  4. Keep in mind that bugs can lead to unintended execution of malicious code.
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  5. A definitive no, these attacks only get you data in the running system. If you boot your own OS then the original OS isn't in memory anymore.
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  6. It's not when only one thread is running. Single-thread performance is always the limiting factor unless all cores are 100% used. Due to the nature of computing not all tasks can be parallelized, thus single-thread performance will always matter for normal usecases. If you drop to 1/10 the single-core performance but have 20x the cores your performance will still suffer.
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