IE9 introduced several features that brought it closer to competitors like Chrome and Firefox:
: Interestingly, the 64-bit version of IE9 lacked this JIT compiler, making it up to four times slower than its 32-bit counterpart in JavaScript benchmarks. Internet Explorer 9 (32 bits)
Internet Explorer 9 (IE9) was a major release in Microsoft's browser history, officially launched on March 14, 2011, during the South by Southwest (SXSW) festival . It marked a significant shift toward modern web standards and high-performance browsing. Core Technical Profile (32-bit) IE9 introduced several features that brought it closer
: The 32-bit version featured the new "Chakra" JavaScript engine. It utilized a background thread for Just-In-Time (JIT) compilation , allowing users to interact with pages while the browser generated faster code in the background. Core Technical Profile (32-bit) : The 32-bit version
: It was the first version of IE to achieve a perfect or near-perfect score on the Acid3 test (reaching 100/100 after the test was revised) and introduced support for HTML5, CSS3, and SVG. System Requirements and Lifecycle
: The interface was redesigned to be minimalistic, featuring a combined address and search bar called the "One Box" .
While IE9 was available in both 32-bit and 64-bit editions, the 32-bit version was the default and generally recommended choice due to its superior performance at the time.