Ya. Normally the opposite is true. And color me unimaginative but, if you have a multi-core processor, it’s already fast enough to run any browser with ease, one a single core.
Firefox can use lots of cycles if you have lots of windows and tabs open and some of that Java stuff doing whatever it does...gets sluggish for me....and I have enough hardware ....cause I want a super responsive system.That’s with a Linux...Ubuntu Jaunty system .