Google Chrome Beta for Mac speed test
Safari is the fastest browser on a Mac platform, approximately 12% faster than Chrome Beta according to Computerworld. Chrome easily leaves behind Firefox and Opera in JavaScript rendering performance.
On the Windows platform Chrome 3.0 shines as the fastest browser, leaving Safari behind. We might expect a speed boost in the final version of Chrome for Mac, although Google has made no claims regarding Chrome JS rendering speed on Leopard.
JS rendering performance is important for websites and web apps that rely on JavaScript to provide rich functionality. Gmail, Google Maps, Flickr, a9, online text editors, and any other site that uses AJAX.