Samsung is currently testing its own 2nm process as a fallback should TSMC capacity fail to meet demand. In a broader push to redesign the AI memory stack, Samsung and SK Hynix are developing HBM4E with target speeds of 16 Gbps, a 20% increase over HBM4. Samsung's 12 high stack version offers 48 GB of capacity and bandwidth of approximately 3.6 TB per second, with initial samples shipped in May.
