3D XPoint

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3D XPoint

(3D Cross Point) A non-volatile phase change memory and storage technology from Intel and Micron. Optane is Intel's brand for 3D XPoint, while Micron uses the QuantX moniker. Less expensive and denser than dynamic RAM (DRAM), XPoint is more costly than NAND flash but is considerably faster while using less power.

Both Memory and Storage
3D XPoint has unique attributes. Like all RAM chips (DRAM and SRAM), it is byte addressable and can thus be used as main memory or as a secondary RAM bank. Because it is non-volatile, it can also replace an SSD or hard drive or be used in conjunction with them.

XPoint is expected to be available in 256GB and 512GB modules compared to DDR4 capacities, which typically max out at 64GB. See byte addressable and SDRAM.

Cross Point Structure
Voltage applied to the top and bottom wire of the selector causes the cell to be read or written, and transistors are not required at each cell like they are with DRAM. Unlike flash memory that has a limited life span, XPoint is not affected by the number of write cycles. (Image courtesy of Intel.)

Byte        Non-Addressable  Volatile   SpeedSRAM     Yes        No      Fastest

 DRAM     Yes        No      Faster

 XPoint   Yes        Yes     Fast

 NAND     No         Yes     Slow
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References in periodicals archive ?
Intel partnered with Micron to develop a new form of memory technology called 3D XPoint to achieve high reliability.
On a related note, Intel is also leveraging the 3D XPoint memory technology NSG developed to build dynamic random-access memory (DRAM) substitutes, known as (https://www.fool.com/investing/2018/06/04/at-long-last-intel-announces-optane-dc-persistent.aspx) Optane DC Persistent Memory, in a bid to try to capture some of the DRAM TAM while simultaneously building a moat around its Xeon data center processor platforms.
Micron is currently collaborating with ecosystem partners to introduce 3D XPoint products in late calendar 2019, with revenue ramp starting in calendar 2020.
Finally, the improved 3D V-NAND stack from Samsung can stand up to the newer 3D Xpoint.
It is based on technology called 3D Xpoint, developed in collaboration with memory manufacturer Micron.
Early testing of Intel Optane solid state drive (SSD) prototypes - which utilize 3D XPoint Memory Media - demonstrate a 10 times reduction in latency and three times increase in throughput as compared to a NAND SSD1, allowing for significantly faster movement of data between the storage device and CPU.
The Optane SSDs use the 3D Xpoint technology, which gives them ultra-fast access speeds.
Non-volatile Memory Market By Type (Flash (Nand, Nor), Eprom, Eeprom, Nvsram, 3d Nand, 3d Xpoint, Nram, Reram/Cbram, Fram, Mram/Sttmram, Nvdimm), Application (Consumer Electronics, Automotive, Enterprise Storage), And Geography - Global Forecast To 2022
The 3D XPoint (pronounced "cross point") transistor-less technology can turn immense amounts of data into valuable information in nanoseconds.
M2 PRESSWIRE-August 12, 2019-: 3D Xpoint Market 2019: Global Key Players, Trends, Share, Industry Size, Segmentation, Opportunities, Forecast To 2024
Instead, Micron will be able to use the plant to optimize production of its 3d XPoint storage chips, which are denser because they have multiple layers.