According to Betanews, a series of wide-ranging performance tests - comparing Microsoft’s Tuesday-released Internet Explorer 9 Platform Preview to the existing Web browsers – have revealed that the IE9 boasts notable speed gains over others browsers in specific categories, most significantly in computation; thanks to the development team’s JavaScript engine ‘Chakra.’

Specifically speaking, Betanews confirmed that IE9 framework on Windows 7 offers as much as 9.32 times better raw computational performance, as compared to IE8 on Windows 7, on the same computer – largely because of the greatly-improved scores in the highly esteemed SunSpider battery, along with high scores in a new set of variable-workload computational tests.

Furthermore, as compared to the computational speed of IE7 on the older operating system, the new IE9 boasts a nearly 45 times better computational performance.

The IE9 further manages to stretch some marginal speed improvements in the rendering department due to its incorporation of HTML 5; though it is worth a mention that the IE9 chassis is running in an almost feature-less window with very minimal overhead. At present, the IE9 technical preview offers 23 percent better rendering performance than IE8.

The Betanews statistics are based on its compilation of a series of next-generation browser tests; which duly take into account the feedback received from readers as well as browser manufacturers, Microsoft included.