China's AI chip race moves beyond process nodes into memory and packaging

China's AI chip sector faces a strategic inflection point. The article indicates that relying on process node competition—the traditional metric of chip advancement—has proven insufficient to compete globally. This reflects a broader industry reality: as leading-edge transistor nodes become increasingly difficult and expensive to manufacture (a challenge compounded by export restrictions on advanced chipmaking equipment), competitive advantage increasingly depends on how chips are integrated into systems. Memory bandwidth, packaging density (how tightly chips can be stacked), and interconnect speed all critically determine an AI processor's real-world performance and energy efficiency. By broadening its focus to these areas, China's chip industry is acknowledging both the limits of pursuing cutting-edge process nodes and the multiple pathways to building effective AI hardware. The emphasis on 3D memory—a technology that stacks memory vertically to increase capacity and reduce latency—suggests Chinese makers see this as a critical area where they can differentiate and potentially overcome current constraints.