Gaming performance is strongly influenced by video drivers and gamers will likely see improvements after installing SP1 if they had not yet installed previously released updates that address issues regarding virtual memory space and multi-GPU systems. Windows Vista SP1 also includes an updated DirectX runtime which supports all current DirectX 9 and 10 hardware, as well as new 10.1 class hardware. All Direct3D 10.1 class video cards fully support Direct3D 10 features in addition to new capabilities, and games that use Direct3D 10 will work on both 10 and 10.1 class hardware.