We generally say that the chip 14nm, 10nm, 7nm, 5nm, refers to the chip process, that is, the size of the processing CPU and GPU surface transistor gate circuit. Generally speaking, the smaller the size of the transistor, the more transistors can be accommodated on the surface of the chip of the same size, and the stronger the performance. For example, the Apple A11 processor uses a 10nm process, the number of transistors on the CPU surface is 4.3 billion, and the A12 processor is upgraded to a 7nm process, and the number of transistors is increased to 6.9 billion. By A13, although still a 7nm process, it was a second-generation technology, and the number of transistors increased to 8.5 billion.