Chinese company with $24 billion funding claims its will bring DDR4 speeds to NAND
Government funded Chinese NAND manufacturer, Yangtze Memory Technologies is to reveal more details about its Xtacking technology during Flash Memory Summit held from the 6th till the 9th of August this year. Xtacking technology should bring DDR4 RAM speeds to NAND memory.
In a press release, the company announces that its CEO, Simon Yang, will talk at the Flash Memory Summit, “where he will illustrate how the company’s new technology can increase NAND I/O speed up to DRAM DDR4 while delivering industry-leading bit density, marking a quantum leap for the NAND market.”
Transfer rates of DDR4 memory can range from 17 GB/s for DDR4 2133 up to 25.6GB/s for DDR4 3200. Current fast NVMe SSDs can achieve transfer rates of up to 3,500 MB/s for sequential reads, and up to 2,100 MB/s for sequential writes, which means drives with, “patent-pending”, Xtacking technology need to be 5-7 times faster than current NVMe SSDs.
Wuhan, China, July 25, 2018 - Yangtze Memory Technologies Co., Ltd (YMTC), a new player in the NAND industry, will be joining Flash Memory Summit this year for the first time, delivering a much-anticipated keynote address to reveal its ground-breaking technology - XtackingTM. YMTC is the first Chinese company to take part in the high-entry-barrier NAND flash memory industry with its new architecture for unprecedented performance, higher bit density, and faster time-to-market.
Simon Yang, YMTC CEO, will deliver a keynote address, Unleashing 3D NAND’s Potential with an Innovative Architecture, on August 7th, from 3:00 p.m. at the Mission Ballroom in the Santa Clara Convention Center, where he will illustrate how the company’s new technology can increase NAND I/O speed up to DRAM DDR4 while delivering industry-leading bit density, marking a quantum leap for the NAND market.
The XtackingTM technology will enable the production of NAND that has unprecedented I/O speed and as a result, increase the performance of NAND solutions such as embedded UFS, client SSD, and enterprise SSD to a level that is unheard of. With help from customers, industry partners, and standard bodies, XtackingTM will bring in a whole new chapter in high performance NAND solutions for smartphone, personal computing, data center, and enterprise applications.
The XtackingTM technology enables parallel processing of the NAND array and periphery. This modular approach to 3D NAND development and manufacturing will shorten the time-to-market for new generation of 3D NAND and open the possibility for customized NAND flash products.
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Senior Member
Posts: 2270
Joined: 2013-03-10
Better wait to actually see results from third party evaluators than believe a marketing speech from a new manufacturer. In fact even old manufacturers shouldn't be trusted before results are verified in practice. Intel's Lolptane didn't transform the world either. Intel even had to blackmail mobo manufacturers to make the merchandise move at all.
Senior Member
Posts: 324
Joined: 2013-04-05
Intel made a lot of mistakes with Optane but the underlying technology is pretty awesome.
The price per GB, obscure form factors, low capacity and hoops you had to jump through all got in the way of Optane's success.
Had Intel created an all in one SSD with Optane cache and software built in they would have had a killer product.
Intel does not even support the best Optane setups officially. That stupid 58GB 800P SSD is actually 100% compatible with Optane cache and is far superior to their 16/32GB offerings but Intel does not support this use case. This is baffling as the 800P SSDs are useless as they are designed (OS + apps drive) but as cache for a SATA drive they let you create a compelling solution. A 2TB 860 EVO + 58GB Optane cache is both faster and cheaper than a 2TB 970 EVO but Intel wont acknowledge that this works and if you ask they will tell you flat out that the 800P drives are stand alone devices, not cache drives.
If this new Xtacking technology can be implemented in a far more plug and play way and at a price point that people can justify it could actually change the industry.
Senior Member
Posts: 1083
Joined: 2017-06-26
I would L-O-V-E to see SSDs getting the speeds of RAM, really. And not only because of MB/s but in terms of >>latency<< as well. SSDs tend to have a latency in the ms-range (milliseconds), while RAM is in the ns-range (nanosecond).
If you are able to drive 340 miles per hour your car is fast without doubt. But when you need about 15 minutes to change from one gear to another, you won't win a race, do you agree?

Junior Member
Posts: 3
Joined: 2017-09-04
Intel made a lot of mistakes with Optane but the underlying technology is pretty awesome.
The price per GB, obscure form factors, low capacity and hoops you had to jump through all got in the way of Optane's success.
Had Intel created an all in one SSD with Optane cache and software built in they would have had a killer product.
Intel does not even support the best Optane setups officially. That stupid 58GB 800P SSD is actually 100% compatible with Optane cache and is far superior to their 16/32GB offerings but Intel does not support this use case. This is baffling as the 800P SSDs are useless as they are designed (OS + apps drive) but as cache for a SATA drive they let you create a compelling solution. A 2TB 860 EVO + 58GB Optane cache is both faster and cheaper than a 2TB 970 EVO but Intel wont acknowledge that this works and if you ask they will tell you flat out that the 800P drives are stand alone devices, not cache drives.
If this new Xtacking technology can be implemented in a far more plug and play way and at a price point that people can justify it could actually change the industry.
While I agree with everything you said, remember that what makes RAM (and optane) so superior to SSDs currently is not simply raw transfer rates, it is also the latency to fetch a specific piece of data.
Let's hope this Xtacking technology will be more than just huge sequential speeds. A persistent memory for all usage would be game changing
Posts: 6074
Joined: 2011-01-02
Y though? And why would we need DRAM then?