A GPU, or Graphics Processing Unit, is a specialized piece of hardware designed to handle complex calculations needed for rendering images and videos. Unlike a CPU, which is optimized for general tasks, a GPU can process many operations simultaneously, making it ideal for graphics-intensive applications like video games and 3D modeling. In addition to gaming, GPUs are increasingly used in fields like artificial intelligence and machine learning. Their ability to perform parallel processing allows them to analyze large datasets quickly, making them essential for training AI models and running simulations. This versatility has made GPUs a vital component in modern computing.