A dedicated graphics card is a separate hardware component in a computer that is specifically designed to handle graphics processing tasks. Unlike integrated graphics, which share resources with the CPU, dedicated graphics cards have their own memory and processing power, allowing for better performance in tasks like gaming, video editing, and 3D rendering. These cards are often preferred by gamers and professionals who require high-quality visuals and smooth performance. Popular brands like NVIDIA and AMD produce a range of dedicated graphics cards, catering to different performance needs and budgets.