Leading-edge memory fabs - DRAM and HBM

Three firms produce HBM with complex TSV stacking, and their limited wafer capacity directly constrains AI accelerator shipments.

Fabs producing DRAM and high-bandwidth memory (HBM) with through-silicon via stacking for AI accelerators. HBM supply constrains GPU and AI chip output; capacity is ~23% of total DRAM wafers by 2026. Samsung, SK Hynix, and Micron capture 5-8x pricing premium over commodity DRAM.

Fabs producing commodity DRAM and high-bandwidth memory (HBM) on leading nodes (1-beta/1-gamma DRAM); HBM base-die and buffer-die fabrication includes through-silicon via (TSV) processing.

What the evidence shows

Building leading-edge DRAM fabs requires multi-year construction and lengthy ramp-up before volume production.

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High-end HBM supply is constrained by process, packaging, and yield factors, making rapid ramp-up difficult.

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RESCORED JUL 2026oligopolyscaling6 companies

Who controls it

SK HynixSamsung ElectronicsMicron Technology+3 more tracked

$4.0B market · 202625.58% CAGRsource

Where it sits in the stack

Takes in: Silicon wafer, specialty etch and deposition gases, TSV process chemicals

Sends on: DRAM die (commodity) or HBM base-die/buffer-die (via TSV process)

depends onSemiconductor capital equipment Silicon wafers Sputtering targets Process control - metrology, inspection and yield management EDA software and semiconductor IP Photomask and reticle supply chain Semiconductor materials and consumables Fab subsystems and components Fab construction and facility supply chain Silicon: from quartzite to polysilicon Specialty and industrial gases Bulk and process chemicals Lithography systems Plasma etch - dielectric etch

feeds intoHBM stacking - TSV and mass reflow/thermocompression bonding EDA software and semiconductor IP

Related nodes

Pure-play leading-edge logic foundries (sub-5 nm)Leading-edge memory fabs - 3D NAND flash Established/mid-range logic foundries (7-28 nm)Mature/trailing-edge logic foundries (40 nm - 350 nm)Specialty process foundries Integrated device manufacturers (IDMs)

Full scorecard, owner shares, supply edges and the full tracked roster are in the desk letter.

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