Mobile GPUs, or Graphics Processing Units, are specialized hardware components designed to render images and graphics on portable devices like smartphones, tablets, and laptops. They are optimized for power efficiency and performance, allowing devices to run demanding applications, games, and multimedia content without draining the battery quickly. These GPUs work alongside the main processor to handle complex visual tasks, such as 3D rendering and video playback. Popular mobile GPU brands include NVIDIA and AMD, which develop advanced technologies to enhance graphics quality and performance in mobile gaming and applications, ensuring a smooth user experience.