Samsung on Tuesday introduced its sixth-generation V-NAND memory, which in a bid to further improve capacity and density, features over 100 active layers. To make V-NAND with over 100 layers viable from performance point of view, the company had to use new circuit design technology. The new memory features 10% lower latencies and consumes 15% lower amount of power when compared to Samsung's previous-generation V-NAND.

Samsung’s 6th Generation V-NAND features up to 136 layers as well as charge trap flash (CTF) cells. The new memory uses one stack and does not use technologies like string stacking to build over 100 layers. In order to ensure minimal errors and low latencies, Samsung had to use a new speed-optimized circuit design. The latter enables the new 3D TLC 256 Gb chips to offer below 450 microseconds (μs) latency for write operations and below 45 μs for read operations, which is 10% faster when compared to 5th Generation V-NAND, according to Samsung. Meanwhile, the latest V-NAND also features lower power consumption than its predecessors.

It is noteworthy that the new 256 Gb 136-layer V-NAND devices use 670 million holes, down from 930 million holes with the previous generation, which means that the new chips need fewer process steps and are easier to manufacture. What is important is that Samsung plans to use its 136-layer architecture with speed-optimized circuit design to build V-NAND devices with over 300 layers by mounting three of the current stacks on top of each other (thus tripling a chip’s capacity).

Initially, Samsung will offer 256 Gb 3D TLC 136-layer V-NAND devices that will first be used for Samsung’s 250 GB SSDs. Later this year Samsung intends to release 512 Gb 136-layer V-NAND devices that will be used for other drives as well as eUFS storage solutions.

Speaking of the 256 GB 6th Gen V-NAND SSD, it is important to point out that it uses Samsung’s new controller marked as the S4LR030/S94G4MW2.

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Source: Samsung

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  • SirPerro - Wednesday, August 7, 2019 - link

    God I rather use a 64GB SSD and format windows every week than using a spinning HDD.

    People can't understand the incredible difference an SSD makes, no matter the size. It's the single biggest upgrade anyone can purchase, and the unchallenged winner, by some orders or magnitude, in the perceived improvement/dollar ratio.
  • DyneCorp - Wednesday, August 7, 2019 - link

    I've been using a 256GB SSD for years and have had no issues with space using it as the C drive. You are silly.
  • Alistair - Tuesday, August 6, 2019 - link

    2TB SSD's for $200 aren't cheap enough? I don't use anything except flash.
  • ikjadoon - Tuesday, August 6, 2019 - link

    I'm hopeful the 8 TB / 10 TB capacities for an eventual 136-layer triple-stacked QLC SSDs can break the $50 / TB barrier. I realize their costs only went down 20%...but maybe competition can bring them down even lower ;)

    NAS-rated HDDs are at $32 / TB right now...and we're looking for 16 TB to really spread the cost out over a few years.

    $500 for HDDs today vs $1800 for QLC SSDs today. I can't stomach it (yet).
  • MrSpadge - Thursday, August 8, 2019 - link

    "Cost went down only 20%" - that comes just from the die area. There's of course also the question of yield and the tighter process control, probably longer running etching process and/or more expensive tools. I would expect a new wafer to at least initially cost more than V5.
  • name99 - Wednesday, August 7, 2019 - link

    What is your complaint?
    It’s innovations like this that, one step at a time, get us from today’s prices to the prices you want.
  • FreckledTrout - Tuesday, August 6, 2019 - link

    "136-layer V-NAND" Seriously how many layers are they going to be able to make for consumer grade products?
  • name99 - Wednesday, August 7, 2019 - link

    Don’t forget the 670 million (let alone 930 million!) holes.
    People forget how insanely magical these devices are! And people are upset that they cost a few dollars more!!!

    Insert Louis CK cell phone reference...
  • danielfranklin - Tuesday, August 6, 2019 - link

    Please dont stop producing MLC V-NAND. Samsung, you are our only hope.
  • Techtree101 - Tuesday, August 6, 2019 - link

    What's the expected upper limit going to be in capacity? Are we finally going to see drives at semi-reasonable prices beyond 4TB? I personally want an 8TB+ archive drive that's not mechanical at consumer level pricing... even if it's slow by SSD standards.

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