Conventional DRAM is Micron's bread and butter, generating the majority of revenue across server, mobile, and PC applications. The current upcycle is unusually strong because AI reallocation is tightening supply across all DRAM segments -- manufacturers are shifting advanced wafer capacity to HBM and server DRAM, creating scarcity even in consumer segments. Server DRAM prices surged 60-70% in early 2026. The fundamental question is whether this AI-driven supply reallocation creates a structural floor under conventional DRAM margins, or whether this is just a particularly powerful (and temporary) cyclical upswing.
AI reallocation creates an unusual dynamic for conventional DRAM
All three memory manufacturers are prioritizing HBM and server DRAM production, which consumes the same advanced wafer capacity needed for conventional DRAM. This creates an artificial supply shortage in mobile and PC DRAM segments. As long as AI infrastructure buildout continues at current pace, conventional DRAM benefits from a positive supply spillover -- even if conventional DRAM demand growth is modest.
Server DRAM is the highest-margin conventional DRAM segment and the primary beneficiary of AI infrastructure buildout beyond HBM. AI servers require significantly more DRAM than traditional servers -- a typical AI training server uses 1-2TB of system DRAM alongside HBM, compared to 256-512GB for a standard server. Micron's data center DRAM revenue reached records in Q2-Q4 FY2025, with the Cloud Memory Business Unit (including HBM) growing 257% YoY in Q4 FY2025 to $13.5B annualized. Server DRAM pricing is surging: Samsung and SK Hynix hiked prices 60-70% in Q1 2026 for major cloud customers including Microsoft and Google. DDR5 transition is providing additional ASP uplift as DDR5 modules carry a premium over DDR4. The server DRAM market benefits from the same AI reallocation dynamic as HBM -- manufacturers are prioritizing server DRAM production alongside HBM, further tightening supply.
Cloud Memory BU revenue exploded 257% in Q4 FY2025 to approximately $13.5B annualized, representing 36% of total Micron revenue. Includes both HBM and high-capacity server DRAM
Mobile and PC DRAM represent a large but more cyclical portion of Micron's DRAM business. The key secular trend is content growth per device: AI PCs are crossing 50% of shipments in 2026 (per IDC), requiring 16-32GB DRAM minimum versus 8-16GB for traditional PCs. Smartphones are following a similar pattern as on-device AI models require more memory. LPDDR5X is becoming the standard for flagship smartphones and AI-capable PCs, carrying higher ASPs than prior generations. However, PC and smartphone unit volumes are growing slowly (low single digits globally), so revenue growth depends primarily on ASP improvement and content growth rather than unit volume. Micron's Mobile/Client business unit reported $7.7B in Q2 FY2026 (+81% QoQ), reflecting strong pricing and content trends. The risk is that mobile and PC DRAM are more exposed to consumer demand cycles and less protected by the AI reallocation dynamic that supports server DRAM.
AI PCs expected to cross 50% of PC shipments in 2026 and reach 80%+ by 2029. AI PCs require 16-32GB DRAM minimum versus 8-16GB for traditional PCs, driving 50-100% content increase
DRAM is THE most cyclical segment in semiconductors, with a 45-year track record of boom-bust cycles driven by capacity overshoot. Micron's gross margin history tells the story: 62% peak (Q4 2018) crashed to -9% (Q3 2019), recovered to 46% (Q1 2022), then crashed to -31% (Q3 2023), and has now surged to 75% (Q2 FY2026, guided 81%). The cycle dynamics are driven by the capital-intensive nature of DRAM manufacturing: when prices are high, all three players invest aggressively in capacity, leading to oversupply 18-24 months later. The current cycle has unique characteristics: (1) HBM is consuming an unprecedented share of advanced capacity, creating structural tightness; (2) All three manufacturers are showing supply discipline, rejecting long-term contracts; (3) AI demand is providing a multi-year demand floor. The bear case argues these 'this time is different' arguments appear every cycle. The 2017-2018 supercycle was also driven by 'structural' demand (cloud computing) and supply discipline, yet margins still crashed. TrendForce reports the current rally may extend past 2028, which would be the longest sustained upcycle in DRAM history.
Micron gross margin history: 62% (Q4 2018) -> -9% (Q3 2019) -> 46% (Q1 2022) -> -31% (Q3 2023) -> 75% (Q2 FY2026), guided 81% Q3 FY2026. Current margins are 20+ points above any pr...