You can check which version of the NVIDIA Control Panel you are using and also get detailed information about your NVIDIA hardware.
To get information about NVIDIA Control Panel, select About NVIDIA Control Panel from the Help menu.
To get information about your system, graphics card, and graphics driver, select System Information from the Help menu, or click System Information from the bottom left corner of the NVIDIA Control panel.
The System Information window–accessed by clicking System Information at the bottom left corner of the NVIDIA Control Panel–provides technical information about the NVIDIA graphics cards and driver installed in the system.
It also provides the following system information:
Operating system: For example, “Windows 7 Enterprise, 64-bit”
DirectX runtime version: For example, “11.0”
In order to use the version of DirectX reported in the System Information window, the NVIDIA GPU and graphics driver must also support that DirectX version.
This information is provided in the Graphics card information section of the System Information window as follows:
Direct3D API version (Provided for Windows 7 and later): This is the Direct3D version that is supported by the NVIDIA graphics hardware and driver. The API version is expressed in terms of Direct3D – the graphics subsystem component of DirectX.
Direct3D feature level (Provided for Windows 7 and later): Direct3D feature levels describe a subset of features within the Direct3D API version that are supported by the NVIDIA graphics hardware and driver.