TLC and QLC devices

The foundation of NAND cell structure

Our customers order NAND based on features and application requirements — not cell density — so why spend time explaining the differences between TLC and QLC? Because understanding the basics of NAND technology provides valuable insights about:

  • Why certain types of NAND perform the way they do
  • How structure affects performance and price

When deciding which kind of NAND is best suited to your application, consider the maturity of the technology and future usage models.

  • QLC is the newest technology deployment. It offers greater densities in a smaller footprint and is positioned as an attractive solution for read-centric applications.
  • TLC is a solution that offers a good cost-versus-performance balance. 3D architectures and error correction techniques have improved cycling and performance to enable TLC in areas where it previously did not fit.
  • MLC is in decline for new designs.
  • SLC for mission-critical data.

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