Windows 8 x64, the 64-bit variant of Microsoft's operating system, introduced a radical departure from its predecessors with a touch-centric interface. While promising improved performance and security, its adoption was hindered by the jarring transition for traditional desktop users. The Start screen, replacing the iconic Start menu, garnered mixed reactions. Despite optimizations for modern hardware, its interface changes and lack of user familiarity led to criticism. However, under the hood, it offered enhancements like faster boot times and improved resource management. Although not as well-received as later versions, Windows 8 x64 laid the groundwork for the evolution seen in subsequent Windows releases.