What does an accelerator card do?

(1) See graphics accelerator. (2) A plug-in card that improves the performance of a desktop computer or server. Accelerator cards are used for cryptocurrency mining, artificial intelligence (AI), big data analysis and other compute-intensive operations.

What is a 3D graphics accelerator?

Graphics accelerators are hardware that is optimized for doing the computations for three-dimensional computer graphics. In desktop systems, the graphics accelerator is usually in the form of a graphics card, but sometimes the graphics accelerator is part of the motherboard.