“Meltdown” and “Spectre”: Every modern processor has unfixable security flaws.
Just an FYI.
Less technical news article: http://www.bbc.com/news/technology-42553818
Also lol: Experts have said that the fix could slow down the performance of computers by up to 30% but Intel played this down, saying that "for the average user, performance impacts should not be significant and will be mitigated over time"