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SK Hynix Eighth-Generation 300-Layer 3D NAND is a World First, Breaks Bandwidth Records

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SK Hynix representatives unveiled the company's latest breakthrough in 3D NAND development at the ISSCC 2023 conference. Details of a new flash memory prototype featuring over 300 layers were revealed, and the company stated that a team of 35 engineers had contributed to the presentation material. In order to highlight the boost in performance offered by the prototype's improvements, it was compared to SK Hynix's previous record holding seventh-generation 238-layer 3D NAND. The new eighth-generation 3D NAND posted bandwidth figures with a maximum of 194 MB/s, which contrasts favorably with the older model's rate of 164 MB/s, representing an 18% increase in performance.

Recording density also benefits from the 300+ active layer design, with SK Hynix mentioning a 1 Tb (128 GB) capacity with triple level cells and a bit density of over 20 GB/mm^2. The chip features a 16 KB page size, four planes and a 2400 MT/s interface. The increase in density will result in a lower per-Tb cost during the manufacturing process. It is hoped that the end consumer will ultimately benefit from the boost in performance and capacity.




Five areas of technological implementations for the eighth-generation 3D NAND have been identified:
  • Triple-Verify Program (TPGM) feature that narrows cell threshold voltage distribution and reduces tPROG (program time) by 10%, which translates into higher performance
  • Adaptive Unselected String Pre-Charge (AUSP) - another procedure to reduce tPROG by around 2%
  • All-Pass Rising (APR) scheme that reduces tR (read time) by approximately 2% and cuts word line rising time
  • Programmed Dummy String (PDS) technique that cuts world line settling time for tPROG and tR by reducing channel capacitance load
  • Plane-Level Read Retry (PLRR) capability that allows to change read level of a plane without terminating others therefore issuing subsequent read commands immediately and improving quality of service (QoS) and therefore read performance



SK Hynix representatives did not provide any firm time frame for the production and eventual launch date of its cutting edge 3D NAND. Industry watchdogs have estimated that the memory boards will not reach shelves until very late 2024, or at some point in 2025. In the meantime, SK Hynix's seventh-generation 238-layer 3D NAND is expected to be integrated into the production cycle of new memory products due for release in 2023.



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The increase in density will result in a lower per-TB cost during the manufacturing process. It is hoped that the end consumer will ultimately benefit from the boost in performance and capacity.

One can hope but then again SSD companies haven't exactly been passing savings onto customers, especially when it comes to higher densities.
 

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One can hope but then again SSD companies haven't exactly been passing savings onto customers, especially when it comes to higher densities.

176 layer nand is relatively new still, and already crashing hard in price. My hope is that this just means we will be getting more TB nvme storage, but same costs... so insted of 2TB nvme at $230 being standard, now it will be like $100 is 2tb, and 250 gets you 8tb or something. i don't know
 
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Does this finally mean will see substantive improvents in low queue depth random reads and writes?
 
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SK Hynix mentioning a 1 TB (128 GB) capacity with triple level cells and
Is this per die? And if so, is it 4 dice per package?

That would be a substantial step in introducing >8TB SSD drives.
 
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One can hope but then again SSD companies haven't exactly been passing savings onto customers, especially when it comes to higher densities.
What rubbish, SSDs are cheaper now than they've ever been.

Sounds great, but what's the ETA for this 8th gen 3D nand, 2025?
You could try reading the article:

Industry watchdogs have estimated that the memory boards will not reach shelves until very late 2024, or at some point in 2025.
 
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Let's see if this will result in a drive larger than 8TB.
 
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What rubbish, SSDs are cheaper now than they've ever been.

Of course SSDs are going to get cheaper over time per TB, same as any other storage device. That much is obvious. I was pointing at that the rate at which they are getting cheaper is not as fast as many predicted.

For the consumer space 4TB TLC SSD are still over $100/TB and 8TB TLC cost $1,200+.

Let's see if this will result in a drive larger than 8TB.

Absolutely, the real question is how much will they charge for it.
 
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And what about life endurance? How many overwrite cycles it can stand?! Why should I buy something that might die within a year?
 
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Hmm I check this and I found that is not precisely right now. Please update your information!
It's definitely an exaggeration. The price per TB definitely jumps versus 2 TB and under. I'd appreciate the prices at least scaling inline with capacity, but then again, it's economies of scale as well. Not many people have a need for an 4 TB NVMe drive, and even fewer for an 8 TB drive.
 
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Hmm I check this and I found that is not precisely right now. Please update your information!




Perhaps you are thinking of QLC drives that are cheaper but I specifically mentioned TLC.

It's definitely an exaggeration. The price per TB definitely jumps versus 2 TB and under. I'd appreciate the prices at least scaling inline with capacity, but then again, it's economies of scale as well. Not many people have a need for an 4 TB NVMe drive, and even fewer for an 8 TB drive.

Links above
 
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You didn't specifically say NVMe or PCIe 4 either.

You mean M.2. NVMe is the protocol akin to AHCI, not the form factor.

I shouldn't have to specify M.2, there are no 8TB TLC SATA consumer drives: https://www.techpowerup.com/ssd-specs/?f&interface=SATA+6+Gbps&capacity=8

You have to go enterprise to get TLC SATA and even then you are talking $900+ for an 8TB drive.

Do you really have to specify PCIe 4.0 either? The vast majority of new drives are going to be PCIe 4.0. The price of older drives is not representative of where pricing in the market is heading.

You can argue with my methodology but an exaggeration it was not.
 
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It's definitely an exaggeration. The price per TB definitely jumps versus 2 TB and under. I'd appreciate the prices at least scaling inline with capacity, but then again, it's economies of scale as well. Not many people have a need for an 4 TB NVMe drive, and even fewer for an 8 TB drive.
Exactly. I've never understood this sense of entitlement that so many people have, "SSD manufacturers should be selling 16TB SLC PCIe 5.0 SSDs for 1c, wahhhhh, so unfair". SSD manufacturers exist to make money.
 
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Link to newest of top flaghip devices isn't proof of your words. :)


The first corsair drive is not a flagship drive, it's not even the more expensive variant of the two variants that exist for it's model.

The Fury Renegade is over 2 years old now and is not Kingston's flaghip.

The only linked flagship is the 8TB drive and that's because there are so few 8TB options. The other 8TB options are all near the same price: https://www.amazon.com/SABRENT-Inte...mzn1.fos.765d4786-5719-48b9-b588-eab9385652d5

Exactly. I've never understood this sense of entitlement that so many people have, "SSD manufacturers should be selling 16TB SLC PCIe 5.0 SSDs for 1c, wahhhhh, so unfair". SSD manufacturers exist to make money.

A strawman argument to say the least.
 
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A strawman argument to say the least.
Much like your claim, that you repeat at every possibility, that SSD manufacturers aren't making SSDs cheap enough for you.
 
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Hi,
Well some m.2 are coming down 1-2tb in price but old stock always.
 
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Hopefully we'll see some more competitive pricing on higher density drives with announcements like this. I'm still in shock at how slowly the prices of spinning rust fall these days. This graph is a great example drives used to fall like the 2 TB drives in this graph do. As you go forward in time, the graphs flatten out quite a bit to the point where the 12+ TB drive prices are almost completely flat. How much of that is pandemic, and how much of it is the demand dropping off for spinning rust? I honestly expected to be putting SSDs in small capacity NASs by now. The pricing is just too much for most SOHO.

 
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Hopefully we'll see some more competitive pricing on higher density drives with announcements like this. I'm still in shock at how slowly the prices of spinning rust fall these days. This graph is a great example drives used to fall like the 2 TB drives in this graph do. As you go forward in time, the graphs flatten out quite a bit to the point where the 12+ TB drive prices are almost completely flat. How much of that is pandemic, and how much of it is the demand dropping off for spinning rust? I honestly expected to be putting SSDs in small capacity NASs by now. The pricing is just too much for most SOHO.


If I had to guess, I'd say it's a combination of SSDs eating away at marketshare along with the HDD manufacturers needing to recoup R&D costs.

If you are looking to replace your hard drives with SSDs, the most economical solution is U.2 enterprise drives. Prices have come down in the last few months and 7.68TB drives that were previously $600 - $700 are now $500 - $600. You can save another $50 if you opt for QLC, although performance and endurance will be lower. There are also 15.36TB and larger U.2 drives but those offer a worse price per GB. I'd recommend staying away from Micron's Pro enterprise SSDs though as they run hot and typically need airflow. I'd typically see 70-72c when I had them installed in a regular desktop.
 
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