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Samsung Unveils World's First 10nm-class 8 Gb LPDDR5 DRAM (betanews.com)

Posted by msmash on from the for-the-record dept.

BrianFagioli writes: Today, Samsung announces yet another milestone, this time with its low-powered memory. You see, Samsung has created what it calls the "industry's first 10-nanometer (nm) class 8-gigabit (Gb) LPDDR5 DRAM." The company promises significant power reduction -- up to 30 percent over LPDDR4X DRAM. This should be important for the upcoming 5G explosion. "The 8Gb LPDDR5 boasts a data rate of up to 6,400 megabits per second (Mb/s), which is 1.5 times as fast as the mobile DRAM chips used in current flagship mobile devices (LPDDR4X, 4266Mb/s). With the increased transfer rate, the new LPDDR5 can send 51.2 gigabytes (GB) of data, or approximately 14 full-HD video files (3.7GB each), in a second," says Samsung.

The Galaxy-maker further says, "The 10nm-class LPDDR5 DRAM will be available in two bandwidths -- 6,400Mb/s at a 1.1 operating voltage (V) and 5,500Mb/s at 1.05V -- making it the most versatile mobile memory solution for next-generation smartphones and automotive systems."

10 of 56 comments (clear)

  1. Re:Bad math? by Desler · · Score: 5, Informative

    6400 Mbps is the data rate per pin. The higher data rate would be for a 64-bit memory bus.

  2. Re:6400 Mbps != 51.2 GB/s by Desler · · Score: 2

    Yes, you're missing that 6,400 Mbps is the data rate per pin. There's more than one pin on the memory bus.

  3. Why would you need 10 gigabit on mobile? by Anonymous Coward · · Score: 2, Insightful


    This should be important for the upcoming 5G explosion. "The 8Gb LPDDR5 boasts a data rate of up to 6,400 megabits per second (Mb/s), which is 1.5 times as fast as the mobile DRAM chips used in current flagship mobile devices (LPDDR4X, 4266Mb/s).

    Full motion compressed HD video is something like 25-40 megabits/second. What could you possibly do with gigabit speeds on a mobile phone? Then, even that's not fast enough and we need it 1.5 times faster?

    Whoever wrote this article doesn't understand computing. The memory bandwidth isn't needed for WAN communication, it's needed for more heavy computing tasks.

  4. Re:Bad math? by Anonymous Coward · · Score: 3, Funny

    maybe you should take this nerd shit elsewhere
    this is slashdot we are a elon musk / facebook / apple fan blog

  5. Re:6400 Mbps != 51.2 GB/s by iCEBaLM · · Score: 4, Informative

    51.2GByte * 8 = 409.6Gbit
    409.6Gbit / 6.4Gbit = 64

    So it's 6.4Gbps (6400Mbps) per pin on a 64bit bus.

  6. Latency? by lobiusmoop · · Score: 2

    Article doesn't mention if the DRAM latency is any better or not... (DRAM latency hasn't changed significantly in the last 15 years)

    --
    "I bless every day that I continue to live, for every day is pure profit."
    1. Re:Latency? by TeknoHog · · Score: 2

      It depends on what you mean by "speed". Usually, perceived computing speed involves both throughput and latency in some way. IMHO, interactive and realtime operations are much more about latency, while throughput only helps you process more stuff per frame. I'm not into gaming, but I'd expect that bad latency can easily make things completely unplayable. Bad throughput, OTOH, will only mean things like lower graphics quality. For a non-realtime look at latency, one of my favourite quotes:

      "Why people think "performace" means "throughput" is something I'll never understand. Throughput is _always_ secondary to latency, and really only becomes interesting when it becomes a latency number (ie "I need higher throughput in order to process these jobs in 4 hours instead of 8" - notice how the real issue was again about _latency_)." -- Linus Torvalds

      --
      Escher was the first MC and Giger invented the HR department.
  7. Re:Very Impressive. 10nm of what? by ourlovecanlastforeve · · Score: 2

    Samsung loves "class."

    They use it on their TVs to make them look larger, too.

    "50 inch class" usually means it's a TV that's 45 inches wide and 2 inches tall.

  8. Re:Very Impressive. 10nm of what? by ChrisMaple · · Score: 3, Interesting

    From https://en.wikichip.org/wiki/10_nm_lithography_process gate length 20 nm, 51 nm metal pitch. Similar to the practices of other semiconductor manufacturers, no honest person could call this a 10 nm process.

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  9. Re:When was the last time we needed a faster ... by shmlco · · Score: 2

    I don't want to ask why people are so clueless... but why are people so clueless?

    Faster chips mean that processors can do more work... or do the same amount of work in less time. Accomplishing X in half the time means the processor is running at speed half the time, which dramatically reduces the amount of power needed to accomplish the task, which in turn improves battery life.

    Which, in your case, means you can spend more time trolling Facebook and news sites.

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    Any sect, cult, or religion will legislate its creed into law if it acquires the political power to do so.