Who makes hbm for AI data centers
HBM (HBM3E, HBM4)
constrained
High-bandwidth memory stacked directly on the same package as an AI accelerator, giving the GPU or ASIC very fast, close-range access to the memory it needs to stay fed.
HBM sits on the accelerator package itself, next to the compute die, rather than on a separate module across the board — the physical packaging that puts it there belongs to Layer 1. It is the first thing a new accelerator generation is designed around, since the number of stacks and their capacity set a hard ceiling on how large a model an accelerator can hold in memory before it has to reach further out to DRAM. AI training and inference workloads scale primarily by adding parameters and context length, both of which are bound by per-accelerator memory capacity, so HBM content has risen with every accelerator generation. The taxonomy flags HBM as the most supply-constrained component in the stack, and also notes that HBM4 base die is fabricated at a foundry partner for some suppliers or produced in-house by others — a qualification detail worth tracking, since a supplier's base-die sourcing shapes its cost position and lead times. For an investor, the things to watch are supplier qualification status on each new accelerator design win, and how stacking-tool and base-die capacity trail the memory makers' own output.
AI delta: Larger models and longer context windows push accelerator designs toward more HBM stacks and higher per-stack capacity with each generation, keeping HBM the tightest link in the memory chain.
The most supply-constrained component in the stack.
Companies on this part (6)
| Company | Role | Ownership | Ticker | Price | 1d | Confidence | Note |
|---|---|---|---|---|---|---|---|
| BESI | manufacturer | public | BESI.AS | 195 EUR | +2.0% | inferred | |
| Disco | manufacturer | public | 6146.T | 60320 JPY | +0.9% | inferred | |
| Hanmi Semiconductor | manufacturer | public | 042700.KS | 218500 KRW | -1.6% | inferred | stacking tools |
| Micron | manufacturer | public | MU | 935 USD | -4.0% | inferred | |
| Samsung Electronics | manufacturer | public | 005930.KS | 260000 KRW | -1.8% | inferred | |
| SK Hynix | manufacturer | public | 000660.KS | 1703000 KRW | -0.8% | inferred | leader |
Who competes here
The same table read the other way: every company above competes for hbm sockets. Confidence tags matter — an inferred placement is a lead, not a confirmed rivalry.
Nearby parts
- Next in layer: DRAM
- Layer: Layer 2 — Memory & storage
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- Samsung eyes zHBM products from 2029 as heat remains key hurdle — DigiTimes, 2026-08-28Samsung anticipates its first-generation zHBM products by 2029, noting that heat management remains a primary engineering challenge for stacking HBM over AI accelerators.
- SK hynix Holds Groundbreaking Ceremony for HBM Production Base in Indiana, “Beginning a New Future for US-Korea AI” — newsroom:sk-hynix, 2026-08-28SK hynix held a groundbreaking ceremony for its HBM production facility in Indiana.
- SK hynix Holds Groundbreaking Ceremony for HBM Production Base in Indiana, “Beginning a New Future for US-Korea AI” — newsroom:sk-hynix, 2026-08-28SK hynix held an event to begin building a new production facility for HBM in Indiana.
- SK hynix Holds Groundbreaking Ceremony for HBM Production Base in Indiana, “Beginning a New Future for US-Korea AI” — newsroom:sk-hynix, 2026-08-28SK hynix began construction of an HBM production facility in Indiana as part of a new US-Korea AI effort.
- SK Hynix breaks ground on US$4 billion Indiana plant that will package, not make, HBM — DigiTimes, 2026-08-28SK hynix initiated construction on a US$4 billion advanced packaging facility in Indiana dedicated to handling High Bandwidth Memory (HBM).
- NVIDIA NVLink Fusion Expands with NVHBM Custom High-Bandwidth Memory — HPCwire, 2026-08-27Amazon's Annapurna Labs is set to collaborate with NVIDIA on the development of NVHBM technology alongside NVLink Fusion for next-generation AI workloads.
- SK hynix Holds Groundbreaking Ceremony for HBM Production Base in Indiana, “Beginning a New Future for US-Korea AI” — newsroom:sk-hynix, 2026-08-27SK hynix is constructing a new advanced packaging production base in Indiana to support HBM manufacturing.
- Oxmiq Labs HBF in AI Compute at Hot Chips 2026 — ServeTheHome, 2026-08-27At Hot Chips 2026, Oxmiq Labs analyzed the potential of HBF compared to HBM in the context of AI compute.
- SK hynix Holds Groundbreaking Ceremony for HBM Production Base in Indiana, “Beginning a New Future for US-Korea AI” — newsroom:sk-hynix, 2026-08-27SK hynix is investing over $4 billion in an Indiana fab to establish U.S.-based mass production of next-generation HBM starting in the second half of 2029.
- Nvidia custom 'NVHBM' promises 30% higher bandwidth, 15% lower power than commodity HBM4e — custom base die and PHY will be available to NVLink Fusion partners — Tom's Hardware, 2026-08-26Nvidia introduced NVHBM, a custom high-bandwidth memory product offering superior performance and efficiency compared to standard HBM4e for its NVLink Fusion partners.
Sources: placements without a source URL come from the taxonomy seed and are tagged accordingly. How this data is built.· Markdown · JSON