Test done with Dronaeo website (a collection of some JS benchmark script done by Mozilla foundation) on a 2.4GHz Macbook w/ 4GB of RAM.
Windows Vista SP1 (virtualized in Parallels)
Google Chrome pwns all… it’s the 1st column, wrongly reported by dromaeo test as “Safari/525.13“. Firefox 3.01 is four time slower, and Opera 9.51 and Safari 3.2.1 for Windows (reported as “Safari/525.21“) are closer. And oh, IE simply crashed running the page ;(
Mac OS X 10.5.3 Leopard
Firefox 3.0.1 wins, but Safari 3.2 made very similar points… Opera is a bit slower than in the windows counterpart… (Good ‘ol) SeaMonkey and Shiira (reported as “Firefox/126.96.36.199″) are four times slower…
Galeon (linux only) is the fastest browser after Chrome, but Firefox 3.0.1 is very near. Konqueror 4.1.1 and Opera 9.52 make decent figures, SeaMonker as usual is the last ;D
Now some inter-OS speed comparison:
Firefox 3.0.1: http://dromaeo.com/?id=28106,28286,28540
measured exactly the same speed on ALL os!
Opera 9.52: http://dromaeo.com/?id=28169,29286,28303
is a lot faster on Windows than Linux or OS X.
Seamonkey 1.1.11: http://dromaeo.com/?id=27933,28439,29213
is slightly faster on Linux than Windows or OS X.