Charts: Micron earns its best margins from PCs, phones, not AI

Micron's margin structure exposes a structural paradox the market has been mispricing: HBM gross margins trail those of mature consumer DDR5/LPDDR5X. The root cause is HBM's TSV stacking yield and advanced packaging costs still climbing, while consumer DRAM has matured to the 1β node with a flattened cost curve. SK Hynix's early NVIDIA lock-in has cemented its HBM pricing power, leaving Micron structurally disadvantaged in the AI memory segment. The real signal is buried in the volume warning. This is not a cyclical blip—CXMT's DDR5 capacity ramp is eroding Micron's Asia-Pacific consumer share, while the shift of AI capex toward inference workloads is squeezing consumer memory demand. Micron's highest-margin pool faces structural contraction. Samsung will almost certainly weaponize its 300mm wafer capacity to launch a consumer DRAM price war, compressing Micron's margin cushion further. Over the next 12-24 months, Micron faces a margin-migration trap: revenue shifts toward lower-margin AI while the high-margin consumer segment shrinks. EPS growth will lag revenue growth materially. The market's "AI equals high margin" pricing assumption is being invalidated by the data.