Yes, DirectX 12 does support DirectX 11 Level 100. DirectX 12 is designed to be backward compatible with DirectX 11, allowing developers to leverage existing code and resources while taking advantage of the new features and improvements in DirectX 12. This compatibility ensures that games and applications built on DirectX 11 can still run on systems that support DirectX 12 without any issues. **

Yes, a DirectX 12 graphics card is backward compatible with games that only support DirectX 11. DirectX 12 graphics cards are designed to be compatible with older versions of DirectX, allowing them to run games that require DirectX 11 without any issues. However, the performance may vary depending on the specific game and how well it is optimized for DirectX 12. **

Some free games that support DirectX 10 include Warframe, World of Tanks, and Star Trek Online. These games are designed to take advantage of the advanced graphics and performance capabilities offered by DirectX 10, providing players with a more immersive and visually stunning gaming experience. DirectX 10 support allows for enhanced lighting, shadows, and effects, making these games more visually impressive for players with compatible hardware. **

DirectX 12 is generally considered better than DirectX 11 for several reasons. DirectX 12 offers better performance by reducing CPU overhead and allowing for more efficient use of multi-core processors. It also provides improved support for newer graphics technologies, such as ray tracing, which can result in more realistic and immersive visuals in games. Overall, DirectX 12 is seen as a more advanced and capable version of the API compared to DirectX 11. **

DirectX 10/11 is generally considered better than DirectX 9. DirectX 10/11 offers improved graphics rendering capabilities, better performance, and more advanced features compared to DirectX 9. It also provides better support for newer hardware and technologies, making it the preferred choice for modern gaming and multimedia applications. Overall, DirectX 10/11 offers a more immersive and visually impressive experience for users. **

Empty Nvidia cards do not support DirectX 12 because they lack the necessary hardware and drivers to run the DirectX 12 API. DirectX 12 requires specific hardware features and driver support to take advantage of its advanced graphics capabilities, and an empty Nvidia card would not have these components. In order to utilize DirectX 12, the Nvidia card needs to be properly installed in a system with compatible hardware and up-to-date drivers. **

No, you cannot play DirectX 11 games with DirectX 12. DirectX 12 is a newer version of the DirectX graphics technology developed by Microsoft, and it is not backwards compatible with DirectX 11. Games designed for DirectX 11 will not be able to run on DirectX 12, and vice versa. **

To change DirectX 12 to DirectX 9, you will need to downgrade your DirectX version. This can be done by uninstalling the current version of DirectX and then installing an older version, such as DirectX 9. Keep in mind that downgrading DirectX may affect the performance and compatibility of certain games and applications, as newer versions of DirectX often offer improved features and optimizations. Additionally, some games may not support older versions of DirectX, so it's important to consider these factors before making the change. **