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Tom’s Hardware
Tom’s Hardware
Technology
Aaron Klotz

SK hynix announces production of its 321-layer NAND flash — shipments will start in the first half of 2025

SK Hynix Hynix Samsung
321-High NAND.

SK hynix has announced the mass production of the world's first 321-layer NAND flash. According to the press release, the company will supply customers with its 321-high NAND flash featuring 1TB capacity starting in 1H 2025.

SK hynix's 321-layer high NAND flash is built on a technology the company dubs the "3 plugs" process. This technology is purportedly known for its excellent production efficiency, and "...electrically connects three plugs through an optimized follow-up process after three times of plug processes are finished." "For the process, SK hynix developed a low-stress material while introducing the technology that automatically corrects alignments among the plugs."

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