>Isn't that the point?
>And here is some more info
>https://www.theverge.com/2018/1/3/16846540/intel-processor-security-flaw-bug-response
>
>BTW I'm not a Intel supporter but I think it's very early to believe AMD or any other CPU does not have similar issues.

The "all x86 are suspect" is a bit different from "and, additionally, we have to use this workaround for Intel".

Which doesn't mean that AMD is beyond suspicion - it may have something else. Those speed gains don't always come from technology, everyone cheats sometimes.