Wait for real sources to back up these claims. There are only a couple sites I'd trust to find out for sure, and "the register UK" is not one of them.
Here's tech report's take on the story (though it's not the same without Scott there). And
Ars Technica. I'd wait until the NDA is lifted, and then go back to these sites, before freaking out about specific brands.
This 30% number is coming from a benchmark that literally does nothing but do a "worst case scenario" of what the fix does (has to do with constant reads of the kernel). Real world performance will depend on actual work being done, and it depends on how much the kernel is used. In that case, for people sitting there using their computers at home for typical daily stuff and gaming, it's probably more like 1-3% if that, but we'll have to wait and see.
There are actually two related vulnerabilities - one appears to only affect Intel, the other affects everything. Including ARM (found in mobile phones and tablets, the Switch, and everything else). Anyway the way the patches work will slow down both Intel and AMD, regardless of which exploit is being addressed. Linux will have the ability to turn it back off for AMD, but Windows won't (yet)
That Register story has everyone freaking out about Intel and 30%, which helps no one. You want to talk about an inevitable lawsuit, there's one Intel will actually be holding against them
