US EditionSK hynix Begins Mass Production of 321-Layer QLC NAND Flash
SK hynix's 321-layer 2Tb QLC NAND flash doubles capacity and boosts write performance by 56%, enhancing power efficiency for AI server storage demands.
- SK hynix Inc. announced on August 24, 2025, that it began mass production of its 321-layer 2Tb QLC NAND flash in Seoul, South Korea.
- The development addresses increasing AI requirements and the need for high performance in data centers, with a commercial release planned for early 2026 after obtaining customer approval.
- The product doubles data transfer speed, improves write performance by 56%, read performance by 18%, and increases write power efficiency by over 23%, while increasing operational planes from 4 to 6 for enhanced parallel processing.
- Jeong Woopyo, Head of NAND Development, said mass production strengthens SK hynix's high-capacity portfolio and cost competitiveness and signals a leap as a full-stack AI memory provider.
- SK hynix plans to introduce its 321-layer NAND technology initially in consumer PC SSDs, followed by deployment in high-capacity SSDs designed for data center applications and embedded flash storage used in mobile devices, with the goal of expanding its efficient, large-scale solutions for AI server environments.
68 Articles
68 Articles
The Korea Times
SK hynix starts mass production of new QLC NAND flash with higher density
Korean chipmaker SK hynix said Monday it has begun mass production of a new quadruple level cell (QLC) NAND flash to address the growing need for h...
Chatham Star Tribune
SK hynix Begins Mass Production of 321-Layer QLC NAND Flash
Development of the industry's highest-density QLC product completed, commercial launch scheduled for the first half of next year following completion of customer validationExpansion of independent operation units ("planes") enables simultaneous large capacity and high performance, optimized for ultra-high-capacity eSSDs for…
Tom's Hardware
World NEWS LiveSK hynix announces mass production of its 2Tb 3D QLC NAND — cheaper high-capacity consumer drives and 244TB enterprise SSDs incoming
SK hynix kicks off mass production of its 321-layer 2Tb QLC NAND, offering higher speed and efficiency at lower cost and paving the way for cheap multi-terabyte client SSDs and ultra-high-capacity enterprise drives of up to 244TB.
Sk hynix plants flag in ultra-high-cap SSD area – Blocks and Files
SK hynix says it’s going to produce ultra-high-capacity, high-performance SSDs for AI servers by using its 321-layer 3D NAND in QLC format. SK hynix is beginning mass production of a 321-layer, QLC 2 Tb die, the world’s first implementation of more than 300 layers using QLC technology, with product shipping in the first half of […]
SK Hynix has announced that the QLC-NAND with 321 layers and a capacity of 2 TBit (256 GB) will now have gone into mass production.
SK hynix Mass Produces 321-Layer QLC NAND for Next-Gen SSDs
SK hynix has completed development and moved into mass production of its 321-layer QLC NAND flash, setting a new benchmark for the industry. The device, built with 2 Tb capacity, doubles the density of prior products and marks the first time QLC technology has surpassed 300 layers.
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