What is the main function of a video card?

The main function of a video card is to control the visual output on a monitor. This essential component is responsible for rendering images, animations, and video to provide output that is displayed on your screen. It processes data from the computer's central processing unit (CPU) and transforms it into a format that can be displayed visually.

Video cards often have their own memory (VRAM) to handle graphic-related tasks independently from the computer's main memory, allowing for smoother graphics performance especially in gaming, video editing, and graphic design applications. They are crucial for any tasks involving intense graphics processing, ensuring that users can view high-quality visuals without lag or disruption.

Other functions, such as audio playback, storage management, or enhancing network connectivity, are roles typically assigned to different hardware components in a computer system, which clarifies why they do not relate to the primary purpose of a video card.