The performance of popular web browsers on the Acid3 test
The Acid3 test was designed by the Web Standards Project to test browser compatibility with DOM and JavaScript web standards.
When successful, the Acid3 test displays a gradually increasing percentage counter with colored rectangles in the background. The percentage displayed is based on the number of sub-tests passed. In addition to these the browser also has to render the page exactly like the reference page as rendered in the same browser.
The tests below were performed with the latest versions of each browser on a MacBook 2.0GHz with 2GB of RAM running Mac OS X 10.5.* (Leopard).
The Internet Explorer 7 test was run on the same machine in a fresh Sun VirtualBox 2.1.0 Windows XP Service Pack 3 Professional Edition virtual machine. The fact that the browser was running in a virtual machine and not natively might have impacted its speed, but would not have had any effect on its ability to render the page correctly.
Webkit r34604 (100/100)
Opera 9.50 (83/100)
Safari 3.1.1 (75/100)
Firefox 3.0 (71/100)
Internet Explorer 7.0.5730.13 (12/100)
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