Samsung's P4 HBM push could worsen DRAM crunch in 2027

Samsung's full-scale pivot of Pyeongtaek P4 to HBM3E/HBM4 isn't just a product shift—it's a structural reallocation of DRAM capacity driven by AI's insatiable bandwidth demands. This move will constrict standard DDR5 supply, inflating prices across server and PC segments. Competitors like SK hynix and Micron must accelerate their TSV and hybrid bonding ramp, yet both trail Samsung by 6–9 months in yield maturity. Taiwan, China’s players risk exclusion from the HBM ecosystem if CoWoS packaging bottlenecks persist into 2027. Meanwhile, China’s CXMT, despite aggressive expansion, remains locked out of EUV-enabled stacking due to U.S. export controls. Under the CHIPS Act, Washington is effectively subsidizing this AI-memory bifurcation, turning generic DRAM shortages into a structural reality. Within 18 months, OEMs will likely sign take-or-pay HBM contracts to secure AI server builds—cementing pricing dominance for the top three suppliers.