Browser Speed Tests: The Latest Chrome, Firefox, Opera, and Safari—on a Mac

Many readers have asked us to replicate our browser speed tests on a Mac, to see the difference in platforms and performance. So we snagged a new MacBook Pro when nobody was looking and tested the latest browsers on it.

While this is a pretty good match to the tests we just finished on Windows, we're adding in a Firefox 4 pre-release build and the final version of Opera 10.6—which, all told, probably isn't that different from the beta, given the short time distance between them. We used the same browser testing parameters we're regularly using for Windows browsers, with a few exceptions.

http://lifehacker.com/5577951/browser-speed-tests-the-latest-chrome-firefox-opera-and-safarion-a-mac