CHROME 40 VS OPERA 27 We compare Chrome 40 to Opera 27 to find out which is the fastest browser when using Html5, Octane, Peacekeeper and Sunspider with Operating System Windows XP and AMD Athlon X2 270 CPU. The reason we are still using Windows XP because we want to show that although Microsoft will no longer support Windows XP there are still secure browsers not made by Microsoft which do support Windows XP."