14 companies in this supply chain, sorted by market share.
Taiwan Semiconductor Manufacturing Company (TWSE: 2330; founded 1987 by Morris Chang); the world's dominant pure-play foundry and the most critical single company in the global technology supply chain. TSMC manufactures approximately 90% of all sub-5nm logic chips globally, including every NVIDIA AI GPU (H100 on N4, H200 on N4X, B200 on N3E), every Apple processor (A18 on N3E, M4 on N3E), and every AMD data center chip. TSMC's N3 and N5 fabs are located in Taiwan — 100 miles from mainland China. Revenue: $93.7B (2024, +34% YoY). AI/HPC share of revenue: 57% (Q3 2025), up from 18% in 2019. N2 volume production began Q4 2025 at Fab 22 Kaohsiung — world's first 2nm logic node in production. TSMC Arizona Fab 21 Phase 1 (N4P) reached 92% yield and profitability in 2025. CHIPS Act recipient: $6.6B grant + $5B loan.
Supplies these inputs
AI Training GPU (H100/H200/B200 class)
Replaceability
Substitutability 2% · 60 mo to replace
Business segments
- Advanced Logic Foundry (<7nm)65% rev
- Specialty Technology (Mature Nodes)20% rev
- Advanced Packaging (InFO, CoWoS)10% rev
- Global Expansion Fabs5% rev
Subsidiary of Ajinomoto Group; sole commercial producer of ABF (Ajinomoto Build-up Film) used in ~95% of CPU and GPU substrates worldwide. ABF was invented from waste byproducts of MSG manufacturing.
Supplies these inputs
ABF Substrate (Ajinomoto Build-up Film)
Replaceability
Substitutability 3% · 60 mo to replace
Business segments
- ABF (Ajinomoto Build-up Film) — Global Monopoly85% rev
- Functional Materials (Electronic + Biomedical)15% rev
World's largest MSG and amino acid producer AND sole-source supplier of ABF (Ajinomoto Build-up Film) — the insulating substrate used in advanced CPU/GPU packaging for all leading chips
Supplies these inputs
ABF Substrate (Ajinomoto Build-up Film)
Business segments
- Seasonings & Foods (MSG, Amino Acid)40% rev
- Amino Science (Feed & Industrial)25% rev
- Pharmaceutical Amino Acids15% rev
- Electronics Materials (ABF)10% rev
NVIDIA Corporation (Nasdaq: NVDA; founded 1993 by Jensen Huang, Chris Malachowsky, Curtis Priem) is a fabless semiconductor company and the dominant supplier of AI accelerators. NVIDIA designs all chips in-house but outsources 100% of fabrication to TSMC Taiwan. H100 (Hopper) on TSMC N4; H200 on N4X; B100/B200/GB200 (Blackwell) on N3E. NVIDIA surpassed Apple as TSMC's largest customer in 2025 ($23.4B, 19% of TSMC revenue, +62% YoY). Revenue: $130B (FY2026 guidance). AI data center segment: ~88% of total revenue. NVIDIA's GPU monopoly in AI training (95%+ share of AI accelerator market) means that global AI infrastructure buildout is physically dependent on TSMC Taiwan fabs. A Taiwan Strait crisis that halted TSMC production would immediately freeze global AI infrastructure expansion.
Supplies these inputs
AI Training GPU (H100/H200/B200 class)
Replaceability
Substitutability 8% · 24 mo to replace
Business segments
- Data Center (AI Accelerators)88% rev
- Gaming GPU7% rev
- Automotive & Robotics3% rev
- OEM & Professional Visualization2% rev
Dominant x86 server CPU maker (Xeon Scalable); owns its own fabs (IDM model); also makes Gaudi AI accelerators; losing server CPU share to AMD EPYC; transitioning to hybrid IDM+foundry model
Supplies these inputs
Server CPU (x86 Xeon/EPYC)
Replaceability
Substitutability 30% · 12 mo to replace
SK Hynix Inc. (KRX: 000660; ~₩66T revenue) is the world's #3 NAND flash manufacturer with ~18% global market share — a position significantly strengthened by its $9B acquisition of Intel's NAND business (completed December 2021), which created the Solidigm subsidiary (formerly Intel NAND) and added the Dalian, China fab. SK Hynix's primary domestic NAND production is at the Cheongju M15X fab (North Chungcheong Province, Korea). SK Hynix is also the world's dominant HBM (High Bandwidth Memory) manufacturer, supplying all of NVIDIA's H100/H200/B200 memory.
Supplies these inputs
AI Training GPU (H100/H200/B200 class) · DDR5 DRAM Server Memory · High-Bandwidth Memory (HBM3/HBM3E)
Replaceability
Substitutability 12% · 12 mo to replace
Business segments
- DRAM (World #2)45% rev
- High Bandwidth Memory — HBM (Dominant Supplier)25% rev
- NAND Flash (World #3)20% rev
- Advanced Packaging + AI Infrastructure10% rev
Samsung Electronics Co., Ltd. (KRX: 005930; ~$200B revenue) is the world's largest NAND flash memory manufacturer with ~33% global market share. Samsung's NAND operations span the Pyeongtaek P3 complex (South Korea) and — critically — the Xi'an, Shaanxi, China facility, which is Samsung's largest single NAND fab by capacity. Samsung received a one-year BIS export control exemption (later extended) to continue upgrading Xi'an equipment under US restrictions. Samsung pioneered 3D NAND V-NAND technology in 2013 (first commercial 3D NAND) and now produces 200+ layer V-NAND. Also produces DRAM (world's largest) and logic chips (Exynos, foundry).
Supplies these inputs
DDR5 DRAM Server Memory · High-Bandwidth Memory (HBM3/HBM3E)
Replaceability
Substitutability 20% · 12 mo to replace
Business segments
- NAND Flash Memory (World #1)28% rev
- DRAM Memory (World #1)25% rev
- Samsung Foundry (Logic Chips) + Exynos20% rev
- Consumer Electronics (Smartphones, TVs, HVAC)20% rev
Rapidly gaining server CPU share with EPYC series (Milan/Genoa/Turin); fabless — manufactured by TSMC; also makes Instinct AI GPUs (MI300X); ~35% server CPU market share in 2024
Supplies these inputs
AI Training GPU (H100/H200/B200 class) · Server CPU (x86 Xeon/EPYC)
Replaceability
Substitutability 20% · 12 mo to replace
Japan's leading manufacturer of high-end ABF flip-chip BGA substrates for Intel, AMD, and Nvidia CPUs and GPUs. Dominant player alongside Shinko Electric; both received Japanese government subsidies to expand capacity.
Supplies these inputs
ABF Substrate (Ajinomoto Build-up Film)
Replaceability
Substitutability 20% · 24 mo to replace
Business segments
- FC-BGA Semiconductor Package Substrates (World #1)55% rev
- Diesel Particulate Filters (DPF)20% rev
- Graphite and Carbon Products15% rev
- Printed Circuit Boards10% rev
Only US DRAM and NAND flash manufacturer; Boise ID; ~22% global DRAM market share; also makes HBM3E for AI accelerators; critical US semiconductor company with CHIPS Act funding
Supplies these inputs
DDR5 DRAM Server Memory · High-Bandwidth Memory (HBM3/HBM3E)
Replaceability
Substitutability 18% · 12 mo to replace
Business segments
- DRAM (Compute & Server)55% rev
- NAND Flash & SSDs25% rev
- High Bandwidth Memory (HBM)12% rev
- Embedded & Automotive5% rev
Taiwan's largest IC substrate manufacturer; major supplier of ABF substrates for AI GPU packaging alongside Ibiden (Japan). Expanding capacity for AI chip demand.
Supplies these inputs
ABF Substrate (Ajinomoto Build-up Film)
Replaceability
Substitutability 20% · 24 mo to replace
Business segments
- IC Substrates (ABF, Flip-Chip)55% rev
- Standard PCB (Consumer, Automotive, Telecom)35% rev
- Advanced Packaging Substrates10% rev
Major Japanese ABF substrate manufacturer; key supplier for Intel processors. Fuji Electric holds a significant stake. Alongside Ibiden, forms a near-duopoly on high-end CPU package substrates.
Supplies these inputs
ABF Substrate (Ajinomoto Build-up Film)
Replaceability
Substitutability 20% · 24 mo to replace
ChangXin Memory Technologies (CXMT; Chinese: 长鑫存储; founded 2016; headquartered Hefei, Anhui, China) is China's primary state-backed DRAM manufacturer and the most significant attempt to break the Samsung/SK Hynix/Micron oligopoly. CXMT has received an estimated $15B in direct and indirect Chinese government subsidies as part of China's drive toward semiconductor self-sufficiency. As of 2025, CXMT is limited to 17nm DDR4 and LPDDR4 technology — approximately 2-3 process generations behind Samsung/Hynix/Micron's 1a/1b-nm class DRAM. CXMT cannot manufacture HBM of any generation: HBM requires Through-Silicon Via (TSV) stacking and advanced packaging techniques that require equipment and process knowledge CXMT does not possess. US export controls (October 2022, October 2023) target the semiconductor manufacturing equipment CXMT would need to advance to 10nm-class DRAM. CXMT's production primarily serves the domestic Chinese market for consumer electronics and is strategically significant as a pressure valve on global commodity DRAM pricing, but it does not threaten the HBM or advanced DRAM segments where the oligopoly's value is most concentrated.
Supplies these inputs
DDR5 DRAM Server Memory
Replaceability
Substitutability 30% · 24 mo to replace
Business segments
- DDR4 DRAM (Desktop/Server)55% rev
- LPDDR4/4X Mobile DRAM35% rev
- Specialty & Emerging DRAM10% rev
ARM-based server CPU designer; founded 2017 by Renée James (former Intel President); Altra and AmpereOne processors used by Microsoft Azure, Google Cloud, Oracle Cloud; not yet profitable but growing rapidly as hyperscalers seek x86 alternatives.
Supplies these inputs
Server CPU (x86 Xeon/EPYC)
Replaceability
Substitutability 30% · 18 mo to replace
Business segments
- Altra & AmpereOne ARM Server CPUs90% rev
- Software & Ecosystem10% rev
