NVIDIA ION is a platform that combines a low-power graphics processing unit (GPU) with an Intel Atom CPU, aimed at providing a balance between power efficiency and graphical performance for netbooks, mini-PCs, and low-power devices. It was introduced by NVIDIA for use in devices like netbooks, small form-factor PCs, and home theater systems.

The NVIDIA ION Windows driver is the software that allows Windows-based operating systems to communicate with the NVIDIA ION GPU and take full advantage of its graphical capabilities. The driver enables features like hardware acceleration, display output, video decoding, and 3D rendering, as well as compatibility with various software applications.