> "Instead, Meltdown exploits side-channel information available on most modern processors, e.g., modern Intel microarchitectures since 2010 and potentially on other CPUs of other vendors."

But their website faq says[0]: every Intel processor which implements out-of-order execution is potentially affected, which is effectively every processor since 1995 (except Intel Itanium and Intel Atom before 2013). .... Currently, we have only verified Meltdown on Intel processors....

[0] https://meltdownattack.com/#faq-systems-meltdown