SK hynix vs. KIOXIA: 3D NAND FLASH Really Needs Split-Cell (Split-Gate)?

 

  2 Min Read     January 27, 2026

 
 

SK hynix’s split‑cell PLC reveal reignites debate as NAND makers reassess architectures to meet soaring AI‑era density demands.

SK hynix vs. KIOXIA: 3D NAND FLASH Really Needs Split-Cell (Split-Gate)?

As the storage demands of the AI era increase exponentially, NAND flash memory manufacturers are reconsidering foundational cell architectures with renewed urgency. Recently, SK hynix unveiled a novel split-cell 5-bit (PLC) NAND architecture, reigniting industry debate over whether split-cell (or split-gate) designs are essential for the next generation of high-density flash memory. This raises a key question: can this approach overcome the hurdles that stalled similar architectures in the past?

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