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first_img Samsung's 4-nanometer production capacity is more than half used for HBM4 substrate chips

Samsung Electronics' wafer foundry division has recently surpassed 50% in the allocation of production capacity for the sixth-generation high bandwidth memory HBM4 substrate chips in the 4-nanometer process. The industry states that this division will invest more than half of its 4-nanometer wafers into HBM4 substrate chip manufacturing in the second half of this year to expand supply to companies like NVIDIA, Broadcom, and AMD.Samsung initiated mass production and shipment of HBM4 in February this year and plans to increase supply starting from the third quarter, significantly increasing the related wafer input since mid-year. This chip is based on Samsung's wafer foundry 4-nanometer (SF4) process. As of last month, over 50% of its total 4-nanometer capacity has been allocated to HBM4 substrate chips. According to insiders, Samsung's 4-nanometer process is currently at full capacity, with HBM4 substrate chips accounting for about 50% to 60%, and this high proportion will be maintained in the second half of the year.Samsung's wafer foundry production lines at Pyeongtaek Plant 2 and Plant 3 are mass-producing processes ranging from 4 to 7 nanometers, with a monthly capacity of about 30,000 wafers for the 4-nanometer process. Based on this, the wafer input related to HBM4 substrate chips is estimated to be about 15,000 wafers per month. During the second quarter earnings call, Samsung stated that it expects HBM4 revenue to increase more than threefold quarter-over-quarter in the third quarter, with HBM4 revenue in the second half expected to exceed 60% of the company's overall HBM revenue.

SK Hynix considers Intel as the next-generation HBM substrate chip supplier

According to Citrini analyst Jukan, SK Hynix is working on diversifying the foundry suppliers for the substrate chips used in high bandwidth memory (HBM), which are constructed by vertically stacking multiple memory chips. It is reported that the company is considering outsourcing part of the substrate chip production for the seventh generation HBM, namely HBM4E, to Intel's foundry. So far, SK Hynix has relied entirely on TSMC for outsourcing substrate chip production.This move is seen as an effort to establish a multi-supplier foundry strategy to reduce the concentration of the supply chain on TSMC while enhancing SK Hynix's bargaining power in pricing. According to industry insiders on August 31, SK Hynix is advancing a plan where the substrate chips for HBM4E may be jointly manufactured by TSMC and Intel, potentially starting from the HBM4E generation.As the market expects the cost burden of substrate chips for HBM4E to further increase. Since HBM products are mainly covered by long-term supply agreements (LTA), SK Hynix also finds it difficult to immediately pass on the higher foundry costs to customers by raising product prices. Therefore, industry observers believe that if Intel ultimately joins SK Hynix's substrate chip supply chain, the company will gain more options in terms of cost competitiveness and supply stability.
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