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
References in periodicals archive ?
Honestly, we're increasingly of the opinion that 3D XPoint, aka Optane, is simply phase change memory with a specific storage controller and some additional improvements from Micron to scale to higher densities.
Going by the model number, you should have guessed that the DC P4800X is an enterprise grade SSD using the new 3D XPoint technology.
Intel Optane technology will utilize 3D XPoint Memory Media and will come to market in Intel(r) SSDs and DIMMs.
The semiconductor memory manufacturing industry is expected to face significant challenges over the next six to eight years period as it would witness the evolution of these emerging non-volatile memory technologies such as 3D NAND, 3D XPoint, NRAM, and others.
For healthcare, 3D XPoint technology could be used to identify fraud detection patterns in financial transactions more quickly, or researchers could process and analyze larger data sets in real time, which could accelerate complex tasks such as genetic analysis and disease tracking.
Intel, the Intel logo, Xeon and 3D XPoint are trademarks of Intel Corporation or its subsidiaries in the U.
Intel chief executive Brian Krzanich says that Intel will leverage Rack Scale Architecture, 3D XPoint memory, FPGAs, and sflicon-photonics technology to revolutionize the data-center infrastructure.
In October 2015, SanDisk announced its partnership with HP on a new kind of faster storage which is expected to be 1000X faster than the current flash based storage system, is this something similar to the 3D XPoint technology?
Non-Volatile Memory Market by Type (Flash, NVSRAM, 3D NAND, 3D Xpoint, NRAM, FRAM, MRAM, NVDIMM), Application (Consumer Electronics, Energy & Power, Healthcare, Automotive, Enterprise Storage), and Geography - Global Forecast to 2022
With its 3D XPoint technology, Optane promises speeds that are seven times faster than those of competing NVMe SSDs.
We believe two recent technological inventions 3D XPoint technology and 3D NAND are key to keeping pace with the combination of growing data and increased computing capability.
These new server processors offer up to 24 cores, 60MB of L3 cache, support for new RAS features, 3D XPoint (when available), and support for 3DS LRDIMMs.