While it's true that speculation as a whole needs to be revisited, Intel is impacted to a much greater extent because they designed their hardware to speculate

While it's true that speculation as a whole needs to be revisited, Intel is impacted to a much greater extent because they designed their hardware to speculate beyond permission barriers as a matter of routine. AMD did not [0] and consequently is affected only by the most general attacks on speculation, e.g., Spectre. As far as I understand, AMD chips are not impacted by Meltdown or any of the MDS attacks. It'd be great to see Michael run the same benchmarks against an AMD chip that has all relevant mitigations enabled and compare the performance loss. I'd ballpark that AMD chips may have lost ~10% overall, whereas we see here that Intel chips have lost ~25%. [0] https://www.amd.com/system/files/documents/security-whitepaper.pdf https://www.amd.com/system/files/documents/security-whitepap...