Samsung Mass Producing Vertical NAND With Higher Performance and Reliability

Subject: General Tech | August 6, 2013 - 01:56 AM |
Tagged: Samsung, vnand, vertical nand, charge trap flash, 128Gb, nand

Today, Samsung announced that it has begun mass production of a new kind of 3D NAND flash memory that offers up higher reliability and write performance versus traditional 2d “planar” technologies. The so-called VNAND (Vertical NAND) is currently being used in 128Gb (Gigabit) flash chips (matching current 2D flash chips), but the technology has the potential to go much further in terms of capacity.

The VNAND combines an updated version of Samsung’s Charge Trap Flash (CTF) technology (originally developed in 2006) with a vertical stacking and interconnect technology that uses special etching techniques to punch holes and electrical connections down from the top of the highest die to the bottom die.

Samsung VNAND Chip 128Gb.jpg

Samsung claims that its proprietary interconnect technology is (currently) able to support up to 24 layers of flash memory. The resulting VNAND offers up to twice the write performance and between 2-times and 10-times higher reliability versus traditional 19nm floating gate NAND (the alternative to CTF NAND) developed on planar processes.

With traditional NAND flash, as flash density increases (such as the move from 25nm to 19nm NAND flash), inter-cell interference also increases due to thinner walls and increased leakage. Samsung is hoping to solve that problem with its vertically-stacked NAND by allowing density to increase without dealing with shrinking the individual layers. Further, each layer is separated by a dielectric (electric insulator) that is currently 50nm and constructed of Silicon Nitride (SiN). The company notes that there is a limit to the height at which flash can be stacked before it becomes un-economical, but that is still a ways off compared to where NAND flash is now as far as densities seen in the wild.

Samsung’s new 128Gb VNAND chip is expected to scale to at least 1Tb depending on consumer demand. The technology is aimed at both embedded NAND and SSDs, but the former is likely to make use of 3D vertical NAND first. Standard 2.5" SSDs could also benefit but modern SSDs are already bottle-necked by the SATA III 6Gbps bus much less by faster write speed potential. Mobile devices, however, could benefit from faster single-chip VNAND packages immediately with faster write speeds and higher reliability (and potentially, density) versus 2D NAND chips.

It is definitely a technology with potential that is worth keeping an eye on.

The full press release can be found over at Engadget.

Source: Engadget

Podcast #262 - Live from QuakeCon 2013!

Subject: General Tech | August 1, 2013 - 01:35 PM |
Tagged: video, shield, Samsung, quakecon, podcast, nvidia, frame rating, crossfire, amd, 840 evo, 7990

PC Perspective Podcast #262 - 08/01/2013

Join us this week as we discuss NVIDIA SHIELD, the Samsung 840 EVO, Viewer Q&A, and much more LIVE from QuakeCon 2013!

You can subscribe to us through iTunes and you can still access it directly through the RSS page HERE.

The URL for the podcast is: http://pcper.com/podcast - Share with your friends!

  • iTunes - Subscribe to the podcast directly through the iTunes Store
  • RSS - Subscribe through your regular RSS reader
  • MP3 - Direct download link to the MP3 file

Hosts: Ryan Shrout, Josh Walrath, and Allyn Malventano

Program length: 1:19:01

More on Samsung's new cached SSD wizardry

Subject: Storage | July 26, 2013 - 06:08 PM |
Tagged: TurboWrite, tlc, ssd, slc, Samsung, 840 evo, MEX controller

Along with Al's review of the new EVO line you can get a second opinion from The Tech Report about the performance of the new SSD with a fast cache.  The majority of the storage is 19nm TLC NAND but there is an SLC cache sitting between the controller and that long term TLC storage to help with the overall responsiveness of the drive, aka TurboWrite. In the 120 and 250GB models that cache is 3GB while in the larger models you get a 6GB cache.  In their real world testing the new EVO drive is incredible at large file copying though Sandforce drives can beat it in small file copy speeds, likely thanks to the compressed write trickery that controller family is so good at.  Check out the review here and keep your fingers crossed that MSRP is the acual price these drives sell at.

TR_nand.jpg

"Samsung's entry-level 840 EVO SSD combines affordable TLC NAND with a server-style SLC cache. We explain the drive's unique buffering tech and explore how it affects performance."

Here are some more Storage reviews from around the web:

Storage

Podcast #261 - ASUS PQ321Q 4K Monitor Review, Samsung 840 Evo details, Kepler meets Tegra, and more!

Subject: General Tech | July 25, 2013 - 02:36 PM |
Tagged: video, tegra 5, Samsung, pq321q, podcast, logan, kepler, asus, 840 evo, 4k

PC Perspective Podcast #261 - 07/25/2013

Join us this week as we discuss our ASUS PQ321Q 4K Monitor Review, Samsung 840 Evo details, Kepler meets Tegra, and more!

You can subscribe to us through iTunes and you can still access it directly through the RSS page HERE.

The URL for the podcast is: http://pcper.com/podcast - Share with your friends!

  • iTunes - Subscribe to the podcast directly through the iTunes Store
  • RSS - Subscribe through your regular RSS reader
  • MP3 - Direct download link to the MP3 file

Hosts: Ryan Shrout, Josh Walrath, Jeremy Hellstrom and Allyn Malventano

Program length: 1:12:20

  1. Week in Review:
  2. News items of interest:
  3. Hardware/Software Picks of the Week:
    1. Jeremy: Got nothing so random mod
    2. Allyn: A sinusesectomy
    3. Morry: When Artic Silver just isn't good enough - IC Diamond Thermal Paste
  4. 1-888-38-PCPER or podcast@pcper.com
  5. Closing/outro

 

Subject: Storage
Manufacturer: Samsung

Introduction and Specifications

Introduction:

Last week, Samsung flew a select group of press out to Seoul, Korea. The event was the 2013 Samsung Global SSD Summit. Here we saw the launch of a new consumer SSD, the 840 EVO:

IMG_0007.JPG

This new SSD aims to replace the older 840 (non-Pro) model with one that is considerably more competitive. Let's just right into the specs:

Read on for our full review of the 500GB and 1TB models of Samsung's new SSD!

Author:
Manufacturer: NVIDIA

NVIDIA Finally Gets Serious with Tegra

Tegra has had an interesting run of things.  The original Tegra 1 was utilized only by Microsoft with Zune.  Tegra 2 had a better adoption, but did not produce the design wins to propel NVIDIA to a leadership position in cell phones and tablets.  Tegra 3 found a spot in Microsoft’s Surface, but that has turned out to be a far more bitter experience than expected.  Tegra 4 so far has been integrated into a handful of products and is being featured in NVIDIA’s upcoming Shield product.  It also hit some production snags that made it later to market than expected.

I think the primary issue with the first three generations of products is pretty simple.  There was a distinct lack of differentiation from the other ARM based products around.  Yes, NVIDIA brought their graphics prowess to the market, but never in a form that distanced itself adequately from the competition.  Tegra 2 boasted GeForce based graphics, but we did not find out until later that it was comprised of basically four pixel shaders and four vertex shaders that had more in common with the GeForce 7800/7900 series than it did with any of the modern unified architectures of the time.  Tegra 3 boasted a big graphical boost, but it was in the form of doubling the pixel shader units and leaving the vertex units alone.

kepler_smx.jpg

While NVIDIA had very strong developer relations and a leg up on the competition in terms of software support, it was never enough to propel Tegra beyond a handful of devices.  NVIDIA is trying to rectify that with Tegra 4 and the 72 shader units that it contains (still divided between pixel and vertex units).  Tegra 4 is not perfect in that it is late to market and the GPU is not OpenGL ES 3.0 compliant.  ARM, Imagination Technologies, and Qualcomm are offering new graphics processing units that are not only OpenGL ES 3.0 compliant, but also offer OpenCL 1.1 support.  Tegra 4 does not support OpenCL.  In fact, it does not support NVIDIA’s in-house CUDA.  Ouch.

Jumping into a new market is not an easy thing, and invariably mistakes will be made.  NVIDIA worked hard to make a solid foundation with their products, and certainly they had to learn to walk before they could run.  Unfortunately, running effectively entails having design wins due to outstanding features, performance, and power consumption.  NVIDIA was really only average in all of those areas.  NVIDIA is hoping to change that.  Their first salvo into offering a product that offers features and support that is a step above the competition is what we are talking about today.

Continue reading our article on the NVIDIA Kepler architecture making its way to mobile markets and Tegra!

Samsung Exynos 5 Octa Returns to ARM Mali GPUs

Subject: General Tech, Graphics Cards, Processors, Mobile | July 23, 2013 - 04:01 AM |
Tagged: Samsung, mali, exynos

Exynos, the line of System on a Chip (SoC) products from Samsung, were notably absent of ARM Mali GPUs. This, apparently, struck concern over how viable Mali will continue to be and whether ARM will continue to lose designs to competitors such as Imagination Technologies.

ARM-Mali-T628.jpg

Then Samsung announced, Monday evening for us North Americans, the upcoming Exynos 5 Octa Processor will embed six ARM Mali-T628 GPU cores. The T628 GPU cores are capable of OpenCL 1.1 and OpenGL ES 3.0 standards which should allow applications to offload heavy batches of tasks, such as computational photography processing, with high efficiency and performance.

The Exynos 5 Octa contains four ARM Cortex-A15 cores at 1.8GHz, supported by four additional Cortex-A7 cores clocked at 1.3GHz. These processors are currently being sampled and should be produced in August.

Read on for the press blast from Samsung PR.

Samsung SSD EVO suggested pricing revealed

Subject: Storage | July 18, 2013 - 01:39 AM |
Tagged: ssd, Samsung, pricing, EVO, 840 evo

Samsung just showed us the pricing slide for their new 1x nm TLC TurboWrite cache equipped SSD line. Without further delay, here is suggested pricing for the Samsung 840 EVO:
 
image.jpg

New Samsung 840 EVO employs TLC and pseudo-SLC TurboWrite cache

Subject: Storage | July 18, 2013 - 01:12 AM |
Tagged: tlc, ssd, slc, sata, Samsung, cache, 840 evo

Samsung's release of the 840 EVO earlier today likely prompted some questions, such as what type of flash does it employ and how does it achieve such high write speeds. Here is the short answer, with many slides in-between, starting off with the main differences between the 840 and the 840 EVO:

DSC04627.JPG

So, slightly increased specs to help boost drive performance, and an important tidbit in that the new SSD does in fact keep TLC flash. Now a closer look at the increased write specs:

DSC04633.JPG

Ok, the speeds are much quicker, even though the flash is still TLC and even on a smaller process. How does it pull off this trick? Tech that Samsung calls TurboWrite.

DSC04637.JPG

A segment of the TLC flash is accessed by the controller as if it were SLC flash. This section of flash can be accessed (especially written) much faster. Writes are initially dumped to this area and that data is later moved over to the TLC area. This happenes as it would in a normal write-back cache - either during idle states or once the cache becomes full, which is what would happen during a sustained maximum speed write operation that is larger than the cache capacity. Here is the net effect with the cache in use and also when the cache becomes full:

DSC04638.JPG

For most users, even the smallest cache capacity will be sufficient for the vast majority of typical use. Larger caches appear in larger capacities, further improving performance under periods of large write demand. Here's the full spread of cache sizes per capacity point:

DSC04639.JPG

So there you have it, Samsung's new TurboWrite technology in a nutshell. More to follow (along with a performance review coming in the next few days). Stay tuned!

Samsung releases 840 EVO SSD at Global SSD Summit

Subject: Storage | July 17, 2013 - 09:06 PM |
Tagged: Samsung, ssd, sata

Good morning from Seoul, Korea!

IMG_0041.JPG

We're covering the 2013 Samsung Global SSD Summit, and the press embargo has just been lifted on a new SSD - the 840 EVO:

IMG_0007.JPG

The EVO will push 10nm-class (1x nm) flash, promises increased (2x-3x) write speed improvements over the 840, and will be available in capaities as high as 1TB:

IMG_0005.JPG

Full press blast after the break, and more to follow as the Samsung SSD Summit continues.