I think you're omission of what Todd Austin really answered in the article, on this question, is close to insincere. > Todd Austin: It’s about 10 percent slowe

I think you're omission of what Todd Austin really answered in the article, on this question, is close to insincere. > Todd Austin: It’s about 10 percent slower on average. We could reduce those overheads if we had more time to optimize the system. You know, we’re just a couple of grad students and some faculty. If a company like Intel, AMD, or ARM built this, I would expect that you’d get the overheads down to a few percent. Edit: Take into account current performance hits for e.g. Spectre, Meltdown patches.