[dynomight]

I've never been able to get firefox to play well for me from the start (for me 2008). I searched for something faster and I found opera and used that.

As is mentioned earlier, firefox does not appear to take advantage of multi-threading. I take this to mean that it's performance would be the same on a quad core cpu or a single core cpu of the same speed. There's much more to it than I know for sure, but certainly feels like it has to share resources with itself as well as anything else running. I tried it out a couple months ago and then went back to Opera/chrome. Many of the same plugins are available in chrome that are offered for firefox.