In the transition from Windows 7 to Windows 8, Microsoft has implemented scads of changes to improve the operating system's performance and responsiveness. To wit: The DirectX programming interface adds more robust 2D functionality, and in Windows 8 it helps render all desktop windows, and even accelerates the new Start screen.
We applaud windows that pop up faster, and we appreciate how applications like Word scroll more smoothly. But what do all the under-the-hood Windows 8 changes mean for PC games? Although my subjective gaming experiences have been positive, I wanted hard data. So I took a moderately high-end (and home-made) gaming PC, played some games, and ran a bunch of performance tests to determine the differences in gaming performance between Windows 7 and Windows 8.