The function of a graphics processing unit (GPU) in computing is to accelerate rendering of images, animations, and video. Unlike traditional CPUs, GPUs are designed to handle multiple tasks simultaneously, making them efficient for parallel processing. This ability enables them to perform complex calculations required for 3D graphics and visual effects, essential in gaming and simulations. Beyond graphics, GPUs are increasingly utilized in machine learning and scientific computing, where their parallel processing capabilities significantly enhance computational speed. Overall, GPUs are indispensable for modern graphics-intensive applications.