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Technology

Samsung Develops GDDR6 DRAM With 24Gbps Speed for Graphics Cards (zdnet.com) 20

Samsung said on Thursday that it has developed a new GDDR6 (graphics double data rate) DRAM with a data transfer rate of 24 gigabits per second (Gbps). From a report: A premium graphics card that packs the chips will support a data processing rate of up to 1.1 terabytes (TB), equivalent to processing 275 movies in Full HD resolution within a second, the South Korean tech giant said. Samsung said the DRAM was comprised of 16Gb chips using its third-generation 10nm process node, which also incorporates extreme ultraviolet (EUV) lithography during their production. The company also applied high-k metal gates, or the use of metals besides silicon dioxide to make the gate hold more charge, on the DRAM. Samsung said this allowed its latest DRAM to operate at a rate over 30% faster than its 18Gbps GGDR6 DRAM predecessor.
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Samsung Develops GDDR6 DRAM With 24Gbps Speed for Graphics Cards

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  • by fazig ( 2909523 ) on Thursday July 14, 2022 @02:33PM (#62703098)

    equivalent to processing 275 movies in Full HD resolution within a second

    Yes, that totally helps me to conceptualize that number better than just reading 1.1TB/s, because that's how we measure things, in Full HD movies per second.
    What is ZDNet's target audience these days?

    • Re:Useful Metric. (Score:4, Insightful)

      by Entrope ( 68843 ) on Thursday July 14, 2022 @02:36PM (#62703114) Homepage

      Apparently people who think in filling up some number of Olympic size Rhode Islands per second.

    • Also apparently for HD movies they are using 4GB as the size (1.1TB/275) which in their mind corresponds to a DVD file size which isn't even HD to begin with.

      I assume ZDNet is written by my parents for my parents who would read it and say "that's alotta movies!"

      • HD is anything over 480p. So why not all DVD content is that, some is. I think FHD (1080p) is a different story without formatting and encoding.
      • FullHD with x265 encoding would fit that file size, so technically correct. Would the video card decode that in less than a second? Not a chance in hell.
      • Re:Useful Metric. (Score:4, Interesting)

        by tlhIngan ( 30335 ) <slashdot@worf.ERDOSnet minus math_god> on Thursday July 14, 2022 @05:21PM (#62703528)

        Also apparently for HD movies they are using 4GB as the size (1.1TB/275) which in their mind corresponds to a DVD file size which isn't even HD to begin with.

        No, it's entirely accurate - HD streaming services are around 4GB for a 2 hour movie or so. The bitrate for HD streaming is 3-5Mbps or so. Contrast this with a Blu-Ray disc where the HD streaming is around 25-50Mbps - the audio itself will be 3-5Mbps or so.

        UHD Blu-Ray averages around 100-125Mbps. UHD streaming services are around 10-15Mbps or so.

        And yes, HD streaming services generally stream around the bitrate of a DVD. They're helped by a far better codec (h.264 versus MPEG-2).

        • They should have taken 1080p RARBG releases as reference, those are about 1.33GB per movie (or so some acquaintance of mine claims), so they could have upped the number to 750 movies per second.
    • really should have been in libraries of congress per second. these non standard units are so confusing.
    • > What is ZDNet's target audience

      Hasn't it been mostly PHB's since the mid-90's?

      Seriously they don't actually understand the primitives to comprehend bitrates.

    • by bn-7bc ( 909819 )
      A full hs movie using what codec with what parameters? This is why the numbers are reported in absolute units otherwise it would just be guesswork. And even my guestion sbove was incomplete to extract an exact number from your hdmivies/secin messurment because the same codec configured the same way would usually produce different bit rates for different movies unless ofc there is an standard defining an exact average bitrate for a hd movie
  • at a rate over 30% faster than its 18Gbps GGDR6 DRAM predecessor

    It is.
    Its 33% faster.

  • current GDDR6X (micron; ~21 Gbps) can already hit over 1TB/sec on a 384-bit bus (e.g., nvidia 3090).

    maybe the article is supposed to be about GDDR7, which is supposed to be ~32Gbps? would be cool if the full fat die 4090ti uses that.

    and what's going on with HBM these days? too expensive?
    • Na, I remember reading Micron's press material for providing the 21Gbps DRAM for the 3090, and they were talking about how 24Gbps was their next step in GDDR6... Obviously the "1TB/sec" is a meaningless fucking piece of marketing material, since that's purely dependent on how many channels the video card uses, and that can't be predicted. They'll use as many as they need to hit their performance target.

      As for HBM- ya, we're on HBM2, and it currently runs about +90% over GDDR6X, which is already really exp
  • Gaming? Full synthetic environments for video conferencing? Meta stuff?

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