SK hynix presents 238-layer 3d-nand for sooner and cheaper SSDs – Laptop – Information

Reminiscence producer SK hynix has developed 3D Nand reminiscence with 238 layers, the best variety of layers within the business. These chips would be the first for use in SSDs for desktops. Mass manufacturing will begin within the first half of subsequent 12 months.

The 238 layer nand reminiscence is tlc nand and have to be the present nand technology with 176 layers observe up, writes SK hynix. The South Korean producer introduces the brand new reminiscence kind within the type of 512Gbit chips, every of which has a capability of 64GB. In time, that density needs to be doubled to 1Tbit or 128GB per chip.

Based on the producer, the pace is 50 p.c larger than its earlier technology nandflash, with switch speeds of two.4 Gbit/s per chip. The facility consumption when executing learn assignments has additionally been lowered by 21 p.c. Furthermore, with the step to 238 layers, the die dimension for tlc nand chips decreases, which implies that SK hynix can extract extra reminiscence from a wafer. This could guarantee, amongst different issues, decrease manufacturing prices.

The producer calls this reminiscence “4d-nand,” a advertising identify the corporate has been utilizing since 2018 to designate reminiscence with a chargetrapflash design, or ctf design, and a peri-under-cell format. at ctf these costs are saved in an insulator. Historically, nand chips have been produced with floating gate designs, the place electrical costs are saved in a conductor. The ctf method ought to keep away from interference between reminiscence cells for higher efficiency. Bee periphery below cell grow to be peripheral circuits positioned straight under the reminiscence cell. Usually these circuits are subsequent to the reminiscence cell. Based on SK hynix, this improves manufacturing effectivity and density.

SK hynix will start mass manufacturing of its 238-layer nand reminiscence within the first half of 2023. The chips are primarily utilized in consumer SSDs for PCs and laptops. Server SSDs and storage chips for smartphones will observe later. The 1Tbit chips with 238 layers can even observe in 2023, however a extra concrete launch interval will not be given.

Bron: SK hynix