During Microsoft's MIX conference in Las Vegas, Windows Phone director Joe Belfiore took the stage to demonstrate how well Microsoft's new Internet Explorer 9 mobile browser can render HTML5 websites.

He fired up a device running Microsoft's new Windows Phone "Mango" update with IE9 installed and then started an HTML5 speed test benchmarking the Mango device against the iPhone 4 and the Google Nexus S.

[via WinRumors]