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Apple's Safari 4 browser, launched on the 24th of February, has proved to be 3.5 times faster than Firefox 3, 1.2 times faster than Google Chrome and 42 times faster than Internet Explorer 7, at rendering JavaScript.

The Cnet team has used the SunSpider suite of JavaScript tests in order to determine which browser was the quickest.

You can see the actual figures below:

browsers benchmarkPhoto source: Cnet

These are results from a PC with a 2.1GHz Intel Core 2 Duo:
1) Safari 4 (Total time: 910ms)
2) Mozilla Minefield 3.2a1 (1,136ms)
3) Google Chrome (1,177ms)
4) Firefox 3 (3,250ms)
5) Opera 9.6 (4,076ms)
6) Internet Explorer 8 (5,839ms)
7) Internet Explorer 7 (39,026ms)