Internet Explorer 9 (32 Bits) -

: 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.

: 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)

: IE9 was compatible with Windows 7, Windows Vista SP2 , and their server counterparts. Notably, it was the first version of IE to not support Windows XP. : The 32-bit version featured the new "Chakra"

: The last regular security update was released on January 14, 2020 , though some versions on Windows Server 2008 remained eligible for Extended Security Updates (ESU) until early 2023. Windows Vista SP2