The battlefront of the AI computing race is spreading from chip capacity to upstream materials. South Korea’s SK Hynix saw its silicon wafer procurement surge 104% quarter-over-quarter in the second quarter of this year, far exceeding the pace of domestic rival Samsung Electronics — a clear sign that the HBM leader is locking in raw material supply with unusual aggressiveness in preparation for mass production of next-generation HBM4 high-bandwidth memory.
Industry sources indicate that this doubling of procurement volume stems from simultaneous pressures: expectations of silicon wafer price increases and inventory buildup for AI memory chips. For SK Hynix, the core objective of securing upstream materials ahead of time is to smooth out future procurement cost volatility and ensure that HBM and advanced DRAM capacity ramps are not constrained by material shortages.
Notably, SK Hynix and Samsung Electronics diverged sharply in procurement strategy this quarter. While SK Hynix aggressively stockpiled materials, Samsung maintained a relatively conservative pace. Market observers interpret this as reflecting a strategic difference between the two companies in the AI memory arena: SK Hynix is pushing with greater ambition to solidify its delivery certainty and first-mover advantage in the AI supply chain.
Strong Cash Flow Fuels Accelerated Expansion
SK Hynix’s willingness to make large-scale material commitments is underpinned by robust financial performance. In the first quarter, the company posted revenue of ₩52.58 trillion (approximately $38.3 billion), up 298% year-over-year, with operating profit of ₩37.61 trillion (approximately $27.4 billion). Net margin exceeded 70%, and both DRAM and NAND average selling prices hit record quarterly highs.
Abundant cash flow has provided ample ammunition for this stockpiling strategy. To support HBM4 mass production, SK Hynix has raised its 1C DRAM expansion target to nearly double the original plan, lifting the monthly capacity goal to 170,000–200,000 wafers by the end of Q1 2027. The company also plans to invest $4 billion to build a next-generation HBM packaging facility in Indiana, United States.
Technology development is advancing at full speed as well. SK Hynix has completed development of 16GB LPDDR6 chips on the 1c process node, with significant improvements in data processing speed and power efficiency. Mass production validation of its 375-layer NAND flash memory has also been completed, marking the first use of molybdenum as a replacement for tungsten in word-line metal gate materials, with volume production expected to begin before year-end.
Unprecedented Approval of Equipment Price Hikes
SK Hynix’s concessions to its upstream supply chain extend beyond materials. Market sources indicate that the company recently broke its five-year practice of demanding price reductions from equipment suppliers, opening a price adjustment window for core equipment vendors and tacitly approving 3%–4% price increases from select tier-one suppliers.
For the molybdenum process equipment in its 375-layer NAND production, SK Hynix ultimately adopted Tokyo Electron’s furnace-based solution, passing over Lam Research’s single-wafer processing equipment — underscoring its heavy reliance on specific process equipment.
From the doubling of silicon wafer procurement to the approval of equipment price hikes, SK Hynix’s series of moves reveals a broader trend: under the AI memory supercycle, semiconductor capex dividends are accelerating their transmission to upstream materials and core equipment segments.
The table below summarizes SK Hynix’s recent key developments across materials, equipment, and technology:
AreaSpecific ActionSilicon Wafer ProcurementQ2 procurement up 104% QoQ, far outpacing Samsung Electronics1C DRAM ExpansionTarget raised nearly 2x; monthly capacity of 170,000–200,000 wafers by Q1 2027U.S. Investment$4 billion for HBM packaging facility in IndianaTechnology Breakthroughs16GB LPDDR6 on 1c node completed; 375-layer NAND mass production validatedEquipment ProcurementTacit approval of 3%–4% price hikes for tier-one suppliers, ending five-year price-cut practiceMolybdenum Process EquipmentTokyo Electron furnace-based solution selected; Lam Research single-wafer equipment passed over
Note: Data sourced from market intelligence and industry sources; currency denominations as originally reported.
For investors, SK Hynix’s strategic shift sends a clear signal: when a memory giant is willing to cede more profit margin to upstream materials and equipment suppliers, it indicates a structural shift in supply chain pricing power. The pricing leverage and earnings elasticity of silicon wafer manufacturers and core equipment suppliers will become key indicators to watch in the next phase of semiconductor supply chain dynamics.