The difference is that the chip process is different, that is, the chip gate width is different.
The biggest difference between the chip 14 nm and 5 nm is that the chip process is different, specifically, the smallest component of the chip unit silicon transistor gate width is different, a gate width is 14 nm, a gate width is 5 nm. The architecture of the two is the same, the computer side is basically x86 architecture, the mobile side is arm architecture. In addition, the 14 nm chip can be made by duv lithography or euv lithography, and the 5 nm can only be made by euv lithography.