As the article says, any Intel CPU from the last decade. And seeing as it 's a hardware fault that can't be addressed in microcode, that means it will be at least one CPU generation before it's fixed in the hardware. Details of the 9th generation Intel CPU's are already known, so the design is probably too far along to fix this in them, unless they delay them and go for a 9.5th generation

At least OSX apparently already includes code that prevents exploitation of the bug and AMD is unaffected, although the fix might slow them as well, if it's a quick & dirty hack.