In case it wasn't clear, I was talking about these slides, which Mozilla itself showed a while ago: https://www.phoronix.com/scan.php?page=news_item&px=MTgzNDA

In case it wasn't clear, I was talking about these slides, which Mozilla itself showed a while ago: https://www.phoronix.com/scan.php?page=news_item&px=MTgzNDA https://www.phoronix.com/scan.php?page=news_item&px=MTgzNDA But, as others have said, we may be getting a more drastic increase in performance when the new rendering engine lands, too. I thought this included the new rendering engine, which is why I felt it was quite disappointing compared to those slides we saw before. But if it's only the CSS engine that makes its about twice as fast, that's quite a nice boost. Hopefully the new rendering engine will give it another 2x (at least on quad-core+ machines).