SK Hynix Inc (SK hynix) designs, develops, manufactures, and markets semiconductor products and components. The company’s product portfolio includes server memory, PC memory, mobile memory, graphics memory, dynamic random-access memory (DRAM), NAND Flash memory, and CMOS image sensors.

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SK Hynix Inc undertaken a range of R&D initiatives focusing on advanced memory technologies and solutions. The company has developed mobile NAND solutions like UFS 2.2/3.1 and ZUFS 4.1, enhancing data transfer speeds and power efficiency. In the SSD sector, SK Hynix has introduced PCIe Gen4 and Gen5 SSDs for automotive and data center applications. The company has also advanced server memory solutions with CMM-DDR5 products and mobile DRAM with LPDDR5X and LPDDR5T. Additionally, SK Hynix has made significant strides in graphics DRAM with GDDR7 and high-bandwidth memory with HBM4, focusing on AI and high-performance computing applications. The R&D activities of SK Hynix are managed by several units, including the Advanced Technology Research Institute, Basic Technology Research Institute, and Solution Development Research Institute. These units are responsible for driving innovation, developing new technologies, and enhancing existing products to maintain the company's competitive edge in the semiconductor industry. In FY2025, the company incurred expenses of KRW6,732,527 million on R&D, which, as a percentage of revenue, stood at 6.9%.