One of Windows Vista’s biggest selling points was that it was the only way you could DirectX 10, the software component that would be required to play the very latest video games in their full glory. Sure, you could still play games in DirectX 9, but the differences with DirectX 10, Microsoft promised, would be striking. (Check out this video showing the same scene under both systems and you’ll see what Microsoft was talking about. You can find loads of similar comparisons online.) Games like Crysis benefit clearly from the DX 10 upgrade, but that benefit hasn’t been enoug...