Density is partly a function of the type of circuit. Memory is denser than random logic, for instance. Interconnect eats a lot of area and reduces density. Thi

Density is partly a function of the type of circuit. Memory is denser than random logic, for instance. Interconnect eats a lot of area and reduces density. This chip is largely memory and multipliers, both of which are pretty dense. Fab processes improve over time to have higher density and lower defect rate (which allows bigger chips while getting acceptable yield). So it's not surprising to see a chip on the same node but shipping a year or 2 later (than Ampere) having more transistors.