Running the Sunspider[1] benchmark on the latest Fennec nightly[2], I was pleasantly surprised to find a nice, low result. Compared to the iPhone 4 at 10902ms from a major news site[3], I would say our phone still has lots of life left. [1] http://www2.webkit.org/perf/sunspide...sunspider.html [2] http://ftp.mozilla.org/pub/mozilla.o...mo5-gtk/en-US/ [3] http://arstechnica.com/gadgets/news/...benchmarks.ars