Emerging memories

Which storage-class memory technology, jointly developed by Intel and Micron, was sold under the product name "Optane"?

  1. A3D NAND
  2. B3D XPoint
  3. CHBM
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Answer: B. 3D XPoint

3D XPoint is a memory technology that stacks resistive storage elements and selectors at the intersections of crossing wires. It was commercialized as Optane, a storage-class memory filling the gap between DRAM and NAND flash. The market did not grow as hoped, and the end of the products was announced in 2022.

  • A. 3D NAND is flash memory with cells stacked vertically.
  • B. Correct. Optane was a product based on 3D XPoint technology.
  • C. HBM is high-bandwidth memory made of stacked DRAM.
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More Emerging memories questions

  1. In phase-change memory (PCM), how can multiple bits be stored in one cell (multi-level storage)?
  2. Which memory changes resistance by having metal ions such as silver or copper move through a solid electrolyte to form or break a conductive path?
  3. What is the difference between "bipolar" and "unipolar" operation of ReRAM?
  4. In cross-point memories such as PCM, which chalcogenide device, placed in series with the storage element as a selector, suddenly conducts above a certain voltage?
  5. Why must the read current be limited in STT-MRAM?