DirectX 10 is a collection of APIs for Microsoft Windows that facilitate access to system hardware to facilitate multimedia tasks, including video game programming, released for Windows Vista and 7.
DirectX is a collection of APIs for Microsoft Windows that facilitate access to system hardware such as the video card, sound card, and peripherals to facilitate multimedia tasks, including video game programming. Version 10 of DirectX was released on November 30, 2006 for Windows Vista and 7.