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NVIDIA Unveils Next Gen Pascal GPU With Stacked 3D DRAM and GeForce GTX Titan Z

MojoKid (1002251) writes "NVIDIA's 2014 GTC (GPU Technology Conference) kicked off today in San Jose California, with NVIDIA CEO Jen-Hsun Huang offering up a healthy dose of new information on next generation NVIDIA GPU technologies. Two new NVIDIA innovations will be employed in their next-gen GPU technology, now know by its code named 'Pascal." First, there's a new serial interconnect known as NVLink for GPU-to-CPU and GPU-to-GPU communication. Though details were sparse, apparently NVLink is a serial interconnect that employs differential signaling with embedded clock and it allows for unified memory architectures and eventually cache coherency. It's similar to PCI Express in terms of command set and programming model but NVLink will offer a massive 5 — 12X boost in bandwidth up to 80GB/sec.

The second technology to power NVIDIA's forthcoming Pascal GPU is 3D stacked DRAM technology.The technique employs through-silicon vias that allow the ability to stack DRAM die on top of each other and thus provide much more density in the same PCB footprint for the DRAM package. Jen-Hsun also used his opening keynote to show off NVIDIA's most powerful graphics card to date, the absolutely monstrous GeForce GTX Titan Z. The upcoming GeForce GTX Titan Z is powered by a pair of GK110 GPUs, the same chips that power the GeForce GTX Titan Black and GTX 780 Ti. All told, the card features 5,760 CUDA cores (2,880 per GPU) and 12GB of frame buffer memory—6GB per GPU. NVIDIA also said that the Titan Z's GPUs are tuned to run at the same clock speed, and feature dynamic power balancing so neither GPU creates a performance bottleneck."

14 of 110 comments (clear)

  1. For you sick of proprietary CUDA, it's not OpenCL by Anonymous Coward · · Score: 5, Informative

    but switching to Pascal is a step in the right direction if a bit retro, I guess.

  2. Stability is a problem by Anonymous Coward · · Score: 5, Interesting

    Every Nvidia GPU we've purchased for CUDA compute tasks in the past five years has crashed frequently under load.

    1. Re:Stability is a problem by Chas · · Score: 5, Insightful

      But is this a failure of the implementation or a failure of the installation?

      It's really easy to say "It crashes all the time".

      But it's also really easy to leave out "Our compute cluster space is running at 100+ degrees ambient and our power distribution is shoddy."
      It's also really easy to leave out things like "Our no-name, cut-rate motherboards, memory and PSUs probably aren't up to the task of running these things at maximum utilization."

      --


      Chas - The one, the only.
      THANK GOD!!!
  3. Stacked 3D ram! by Anonymous Coward · · Score: 2, Funny

    Wouldn't that make it 4D?

  4. A chip called Pascal? by Viol8 · · Score: 2, Funny

    Either its the BEGINning of a new era in GPUs , or its called Pascal because its actually French and will go on strike the minute its asked to render a game more complex than Flappy Bird.

  5. a few things left out by sribe · · Score: 5, Insightful

    Like the things that they announced last year, which have simply disappeared off the roadmap without mention. In other words, they are falling behind schedule, and trying desperately to spin this as ongoing progress.

    1. Re:a few things left out by Payden+K.+Pringle · · Score: 2

      Actually, within the PC Enthusiast community, it's believed they are not behind schedule. They just have little reason to push things out quickly due to a lack of competition and need for the technologies themselves. i.e. Neither AMD nor games these days are at a point that actively require the technologies they have (had) planned to be released either to give AMD a run for their money, or to actually make the games playable at our current resolutions. 1080p/1440p are the currently most used resolutions with 4K being far off as it isn't economical yet. I'm not sure on the professional side of things, as I don't know much about that section of the industry, but from our perspective, this move makes perfect sense.

      Why would they release these things, ready or not, when they don't need them? It's more economical to save whatever you've researched for when you actually need to release it, and milk what you currently have for all it's worth.

      It's not good for consumers (the current tech doesn't get cheaper by much, and we don't get the new tech until later), but good for the company (i.e. more profits).

  6. Re:And at only 78,000 USD, it's a steal! by Rhys · · Score: 4, Interesting

    Even if it wasn't 78k (and it isn't, they listed it at 3k if you RTFA) that is a steal if your compute load can actually extract the 8 Tflop from it -- assuming that's the 64-bit flop, not the 32-bit flop.

    I mean, slightly under 10 years ago I know a big-10 university that paid 3000k for a cluster with less Tflops (around 7, but not all in one computation/network).

    I guess I shouldn't be surprised, another few years that should be in laptops or phones.

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  7. Isn't this very similar to the PS4? by Beamboom · · Score: 4, Interesting
    "[...] it allows for unified memory architectures and eventually cache coherency"

    Isn't this more or less precisely how the PS4 is designed? If my memory(!) servers me correctly I'd call this a pretty good design move by Sony, something that should potentially bode well for the longevity of that console, once the games are designed for this type of architecture.

    1. Re:Isn't this very similar to the PS4? by Anonymous Coward · · Score: 2, Insightful

      The PS4 has 8GB of unified GDDR5, and the GPU has 180GB/s bandwidth to that. Cache coherency with CPU is possible but reduces bandwidth to 10GB/s - quite a difference. It's cache coherent today, not eventually.

      PS4 GPU has 1,152 scalar ALUs (72 x 16-way SIMD); I'm not sure how that compares to "CUDA cores", but it sounds like the Titan Z has 2x the memory, 1/2 the bandwidth, 4x the ALUs ... and 8x the price.

  8. PASCAL? Shoulda gone with LOGO! by Thud457 · · Score: 4, Funny

    LOGO would have been a better choice, since it's a graphically oriented language.
    Turtles all the way down.

    --

    the preceding comment is my own and in no way reflects the opinion of the Joint Chiefs of Staff

  9. Re:Such price, much sense by UnknownSoldier · · Score: 5, Informative

    You're obviously not using float64 (or even need it.)

    FP64 Titan Z: 1/3 FP32
    FP64 GTX 780: 1/24 FP32

    For gaming, yes 780 SLI is cheaper and better ROI.
    For gpgpu computing and you _require_ 64-bit float precision, the TITAN or TITAN Z, is far faster.

    Reference:

    * http://www.anandtech.com/show/...

  10. Titan-Z Warning label by Radamax · · Score: 2

    Warning: Pregnant women, the elderly, and children under 10 should avoid prolonged exposure to the GTX Titan-Z.
    Caution: the GTX Titan-Z may suddenly accelerate to dangerous speeds.
    the GTX Titan-Z contains a liquid core, which, if exposed due to rupture, should not be touched, inhaled, or looked at.
    Do not use the GTX Titan-Z on concrete.
    Discontinue use of the GTX Titan-Z if any of the following occurs:
    itching
    vertigo
    dizziness
    tingling in extremities
    loss of balance or coordination
    slurred speech
    temporary blindness
    profuse sweating
    heart palpitations

    If the GTX Titan-Z begins to smoke, get away immediately. Seek shelter and cover head.
    the GTX Titan-Z may stick to certain types of skin.
    When not in use, the GTX Titan-Z should be returned to its special container and kept under refrigeration. Failure to do so relieves the makers of the GTX Titan-Z, Wacky Products Incorporated, and its parent company, Global Chemical Unlimited, of any and all liability.
    Ingredients of the GTX Titan-Z include an unknown glowing substance which fell to Earth, presumably from outer space.
    the GTX Titan-Z has been shipped to our troops in Saudi Arabia and is also being dropped by our warplanes on Iraq.
    Do not taunt the GTX Titan-Z.
    the GTX Titan-Z comes with a lifetime guarantee.

  11. it is B. Pascal not PASCAL the language by fxj · · Score: 5, Funny

    This is hillarious!
    Everybody here thinks it is named after the programming language.

    Tesla, Fermi, Kepler, Pascal,...

    What do they all have in common???

    yeah: a car, a satelite and a programming language