Sk hynix already supplies its 96 layer qlc 4d nand flash memory
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SK Hynix announced today that it has started testing its 96-layer 4D NAND flash chips. New samples include 1 terabit (Tb) memory array , Quad Level Cell (QLC) that will target next-generation, high-capacity QLC-based SSD products that customers are expected to purchase to replace their older hard drives.
SK Hynix already ships its 96-layer QLC 4D NAND flash memory to SSD controller companies
Last year, SK Hynix introduced its new 96-layer 4D NAND flash technology, intended to compete with similar 96-layer 3D NAND flash technologies from other storage technology providers. Their goal was to enable a smoother transition to QLC flash technology (generally known as less reliable than TLC or MLC) with sufficient reliability for most consumers.
QLC technology can store four bits in a single flash cell, which means that 33% more bits can be stored in a new flash drive with the same number of cells. With the introduction of 96-layer flash chips, even higher density can be achieved in next-generation flash products compared to previous SK Hynix 72-layer products. This means, larger capacity units in the same space.
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SK Hynix calls its 4D NAND technology because it uses a combination of 3D Charge Trap Flash (CTF) and Periphery Under Cell (PUC) technology. According to the provider, using 96 layers can achieve an improved bit density of 49% compared to the company's previous 72-layer NAND 3D products.
According to IDC data cited in the announcement, QLC's market share in the NAND flash market is expected to go from 3% in 2019 to 22% in 2023. The enterprise SSD market is expected to have a compound annual growth rate (TCCA) of 47.9%, which should lead to a rapid replacement of hard drives over a period of five years.
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