From what I've learned, 7nm chip stacks don't correspond to specific nanometers.
Chip stacking usually refers to placing multiple chips vertically on top of each other to increase overall functionality and performance.
This stacking technology allows multiple chips with different functions to work together, enabling more efficient computing and processing power.
Therefore, the 7nm chip stack does not directly correspond to a specific number of nanometers, but refers to a multi-level chip design and assembly technology.