Samsung, SK Hynix, Micron in HBM4 race amid custom chip demand

Samsung, SK Hynix, and Micron are in a competitive race to develop and produce High-Bandwidth Memory 4 (HBM4), the next generation of advanced memory chips. This intensified competition is driven by the growing demand for custom-designed chips, particularly those used in artificial intelligence (AI) applications. The push for HBM4 represents a significant focus for these major memory manufacturers.

This competition matters because HBM4 is crucial for powering advanced AI processors and data centers, which require extremely fast and efficient memory. The company that can successfully innovate and scale HBM4 production first stands to gain substantial market share and future revenue opportunities in the rapidly expanding AI and high-performance computing sectors. It signals a critical technological frontier in semiconductors.

The mechanism involves memory manufacturers investing heavily in research and development to create HBM4, which stacks multiple memory dies vertically to achieve higher bandwidth and lower power consumption compared to traditional DRAM. They are also working closely with custom chip designers to ensure their HBM4 solutions meet specific performance requirements for next-generation AI accelerators and data center infrastructure.

This development directly impacts Samsung (005930.KS), SK Hynix (000660.KS), and Micron Technology (MU). Success in the HBM4 race could lead to increased revenue and market share for the leading innovator, while lagging could result in competitive disadvantages. It also indirectly affects companies like Nvidia (NVDA) and AMD (AMD), which design AI chips that will integrate these advanced memory solutions.