India, June 12 -- As SK hynix reportedly targets mass production of 375-layer NAND by year-end, according to The Elec, the 400-layer threshold is increasingly seen as a key technical frontier in advanced NAND scaling.

Against this backdrop, ET News notes that Samsung began mass producing its 286-layer NAND in April 2024 - still its most advanced commercial product today - while Kioxia continues to commercialize its 218-layer NAND, first developed in 2023, according to Nikkei.

Nonetheless, memory giants are pursuing different approaches to advance NAND scaling, focusing not only on increasing layer counts but also on improving performance through incremental architectural and process innovations. Below are their planned roadmaps for 400-...