Joe “Zonker” Brockmeier over at Linux.com ran some speed tests comparing Firefox 4 with Chrome 10 and Opera 11. Firefox won.
It was a close call, all of the browsers were within a nose of each other, but Firefox 4 did perform a bit more quickly than Chrome or Opera, Brockmeier said.
Mozilla is planning three more releases of Firefox this year, so it will be interesting to watch if they can continue to lead the performance race.