HBM 4，拼什么？

Core Viewpoint - The article discusses the competitive landscape of HBM4 supply, highlighting the roles of Samsung Electronics and SK Hynix as the primary suppliers for NVIDIA's next-generation AI accelerator, Vera Rubin, which is set to be unveiled at the GTC 2026 conference [1][2]. Group 1: HBM4 Supply Coordination - Samsung Electronics and SK Hynix are coordinating their HBM4 shipment plans to align with the release of NVIDIA's Vera Rubin [1]. - Samsung plans to deliver HBM4 memory to customers this month, emphasizing its leading speed of 11.7 Gbps and quality verification [1]. - There is ongoing debate regarding the timing, quantity, and significance of these deliveries among industry insiders [1]. Group 2: Market Share and Production Plans - SK Hynix is preparing for mass production of HBM4 according to customer agreements, with indications of a relative advantage in initial production capacity [2]. - Discrepancies exist in market share estimates, with reports suggesting SK Hynix may hold around 70% of HBM4 supply, while Samsung and Micron each hold about 30% [2]. - The industry is focused on which company can complete preparations first, with an emphasis on long-term supply stability and production capacity [2]. Group 3: Capacity Expansion Efforts - Samsung plans to establish a new 10nm sixth-generation DRAM production line at its P4 plant in Pyeongtaek, aiming for a monthly capacity of 100,000 to 120,000 wafers to meet growing HBM4 demand [3]. - SK Hynix is accelerating mass production of 10nm fifth-generation DRAM for HBM4 and is discussing phased capacity expansion plans, including upgrades to its M15x and M16 wafer fabs [3]. - By the end of the year, SK Hynix aims to add approximately 40,000 wafers per month at the M15x fab [3].