DirectX 10 video card, according to the latest hardware survey monthly update on the Steam PC game download service. The latest update shows that 56.47 percent of Steam PC users have either a DirectX 10 or DirectX 11-based video card with Windows Vista or Windows 7. Another 21.55 percent of Steam PC owners have a DirectX 10/11 supported card while still running Windows XP, which is DirectX 9 only.
The rest of the survey shows some expected results including Nvidia graphics card and Intel processors in the vast majority of PC systems. Systems with more than one GPU are in a very small minority; just 1.79 percent of systems have such a set-up.