Just for kicks I ran this on a few devices http://browserbench.org/JetStream/ http://browserbench.org/JetStream/ An iphone 6 gets ~65 iphone 6s gets ~120 ipa

Just for kicks I ran this on a few devices http://browserbench.org/JetStream/ http://browserbench.org/JetStream/ An iphone 6 gets ~65 iphone 6s gets ~120 ipad pro ~130 new Macbook Pro (safari, haswell i7) ~210 Not scientific, but last years phone was half as powerful, in two years the 7s will also have a jump in performance. I don't think an intel system will have anywhere near as large as a jump since we're bumping against the limit of how fast a single core can be.