Integrated GPU (Graphics Processing Unit) or Integrated Graphics is a technology that allows a motherboard to handle graphics generation without a dedicated expansion card with a GPU. Generally this requires that some of your system memory (RAM) be assigned to the GPU instead of the CPU and results in slower performance.
A graphics processing unit (GPU) is a specialized electronic circuit initially designed to accelerate computer graphics and image processing (either on a video card or embedded on the motherboards, mobile phones, personal computers, workstations, and game consoles). After their initial design, GPUs were found to be useful for non-graphic calculations involving embarrassingly parallel problems due to their parallel structure. Other non-graphical uses include the training of neural networks and cryptocurrency mining.