Answer: There's a big difference between 1nm and 7nm. Take the 5nm chip and 7nm chip that many people often talk about as an example, it refers to the transistor width. Smaller size means that more transistors can be stored in the same area, resulting in improved performance. If the number of transistors is kept the same, the chip area can be reduced, resulting in lower energy consumption.
According to calculations, the performance of the chip will be improved by 30% to 60% for every 1nm advanced. Therefore, 7nm to 5nm can be said to be a great progress.