The same test performed on March 15, 2010 showed the first IE9 Platform Preview (using the then-current version of Chakra) to be faster than Firefox (with SpiderMonkey), but slower than Safari (with SquirrelFish Extreme), Chrome (with V8), and Opera (with Carakan).
2010年3月15日，進行的相同的測試顯示，第一個IE9平台預覽版本（使用當時的Chakra版本）比Firefox（SpiderMonkey）快，但比Safari（SquirrelFish Extreme）、Chrome（V8）和Opera（Carakan）還要慢。