Following the successive appearances of Firefox 3 RC3, which is very close to the official version, and the final version of Opera 9.50, Lifehacker once again conducted speed tests on the four commonly used browsers on Windows platform, the other two being Safari 3.1.1 and IE 7.0.6.
The testing platform used a notebook computer with Windows Vista Home Premium (32-bit) operating system, a 2 GHz Intel Core 2 Duo processor, and 2GB of memory.