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Korea Dominates AI HBM Memory Boom

Korea Dominates AI HBM Memory Boom
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🐯Read original on 虎嗅
#hbm-memory#ai-chips#sk-hynix#export-boomhbm3e

💡Korea 80% HBM control bottlenecks AI GPUs; check supply for clusters.

⚡ 30-Second TL;DR

What Changed

SK Hynix/Samsung hold 80% HBM share for Nvidia H100/B200

Why It Matters

Tight HBM supply drives AI infra costs up, favoring Korea in $650B US AI spend; delays GPU clusters for hyperscalers.

What To Do Next

Assess HBM-equipped Nvidia H200 GPUs for your AI training cluster to avoid supply shortages.

Who should care:Enterprise & Security Teams

🧠 Deep Insight

Web-grounded analysis with 5 cited sources.

🔑 Enhanced Key Takeaways

  • •Micron overtook Samsung for second place in HBM market share with 21% in Q2 2025, while SK Hynix held 62%.[4]
  • •SK Hynix achieved 57% HBM revenue share in Q3 2025 per Counterpoint, compared to Samsung's 22%.[2]
  • •Samsung announced HBM4 supply to NVIDIA starting February 2026 with 11.7Gbps data transfer speed, surpassing NVIDIA's 10Gbps requirement.[1]
  • •SK Hynix secured over two-thirds of HBM supply for NVIDIA's upcoming Vera Rubin GPUs.[2]
📊 Competitor Analysis▸ Show
CompanyHBM Market Share (Q2 2025)HBM4 Data SpeedHBM4 Yield Advantage
SK Hynix62% [4]Comparable to Samsung's [1]Higher than Samsung [1]
Samsung17% [4]11.7Gbps [1]Lower than SK Hynix [1]
Micron21% [4]Failed >10Gbps [1]N/A

🛠️ Technical Deep Dive

  • •HBM4 from Samsung achieves industry-leading data transfer speed of 11.7Gbps, exceeding NVIDIA's requirement of over 10Gbps.[1]
  • •SK Hynix's HBM4 matches Samsung's speed performance and features higher yield rates for better profitability.[1]

🔮 Future ImplicationsAI analysis grounded in cited sources

SK Hynix to supply 70% of NVIDIA HBM4 for Rubin GPU
UBS analysis from December 2025 projects this based on SK Hynix's mass production readiness and yield advantages.[1]
Korean firms to maintain 80% HBM market dominance
Micron's HBM4 shortfall positions SK Hynix and Samsung as leaders in the two-horse race.[1]
Samsung production capacity to expand 50% in 2026
Korean news reports confirm Samsung's plans to meet surging AI-driven HBM demand alongside SK Hynix.[3]

⏳ Timeline

2023-01
SK Hynix begins HBM3E mass production
2025-06
SK Hynix reaches 62% HBM market share in Q2
2025-09
SK Hynix holds 57% HBM revenue share in Q3 per Counterpoint
2025-12
UBS forecasts SK Hynix 70% HBM4 supply for NVIDIA Rubin
2026-01
SK Hynix market share at 55%, Samsung at 27%
2026-02
Samsung starts HBM4 supply to NVIDIA
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