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Microsoft introduced the Windows Display Driver to drive the video cards installed in the computer. The display was much more stable, with fewer instances of crashes occurring with the use of the display driver model. Using virtualized video memory, it became possible to render some of the most powerful graphics possible. The desktop became more functional than previously thought possible with prior systems. The 3D effect became possible as the Direct 3D surfaces could be shared across processes. This is one of the primary reasons why the graphics tended to be much more interactive and alive to the inputs.