Industry Analysis
Micron’s surge reflects AI’s hitting the 'memory wall'—where compute scaling now hinges on HBM bandwidth, not just transistor density. Demand for HBM3E/4 is forcing DRAM nodes to 1β/1γ, straining TSMC’s CoWoS and SK hynix/Samsung’s TSV capacity. Upstream, AMAT and Lam orders extend into 2027; downstream, hyperscalers lock supply via prepayments and JVs, raising entry barriers. While U.S. CHIPS Act subsidies ease capex, any expansion of export controls to advanced packaging could spike compliance costs at Micron’s Malaysian and Japanese backend facilities. With Samsung poised to defend share via pricing and SK hynix racing HBM4 yields, Micron must prove delivery reliability by Q4 2026. The 'RAMageddon' shortage will structurally inflate server BOM costs and accelerate CXL adoption over the next 18 months.
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