The CPU is mainly designed for user processing and judgment. It is controlled by software and is good at logic operations. The GPU is designed primarily for graphics processing. Graphics processing is a lot of repetitive work because the same large number of pixels are always displayed on the display. The main capability of the GPU is to perform repetitive tasks. There are a large number of ALUs (computing/logic units), which are much larger than the CPU. Therefore, a large number of mathematical operations can be performed at the same time.