A Graphics Processing Unit (GPU) is a specialized electronic circuit designed to accelerate the rendering of images and videos. It performs complex calculations required for graphics rendering, making it essential for tasks like gaming, video editing, and 3D modeling. Unlike a Central Processing Unit (CPU), which handles general-purpose tasks, a GPU is optimized for parallel processing, allowing it to manage multiple operations simultaneously. GPUs are commonly found in computers, gaming consoles, and mobile devices. They can be integrated into the motherboard or exist as separate components. Major manufacturers of GPUs include companies like NVIDIA and AMD, which produce powerful units for both consumer and professional markets.