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  1. #1
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    Rumor: PS4 GPU Based On AMD's GCN 2.0 Architecture

    Story via NeoGAF.

    From James Prior, tech writer for Rage3D, on the Beyond3D forums:

    I'm hearing that PS4 GCN has 8 ACE's, each capable of running 8 CL's each. I believe Tahiti is 2 per ACE, 2 ACE's.







    What are Asynchronous Compute Engines?

    For use in compute applications, the Southern Islands GCN Tahiti design includes dual Asynchronous Compute Engines (ACE) for the independent scheduling and dispatch of work items, necessary for efficient multi-tasking. This allows compute workloads to operate in parallel with graphics workloads, and facilitates fast context switching so that demands by workloads that exceed concurrency abilities can be given needed resources. Despite featuring PCI-Express 3.0 which doubles interface bandwidth from 8GB/s to 16GB/s, plus support for numerous data and protocol commands, the internal dual DMA engines can push data through the bus to saturate that bandwidth.
    Source


    Meanwhile on the compute side, AMD’s new Asynchronous Compute Engines serve as the command processors for compute operations on GCN. The principal purpose of ACEs will be to accept work and to dispatch it off to the CUs for processing. As GCN is designed to concurrently work on several tasks, there can be multiple ACEs on a GPU, with the ACEs deciding on resource allocation, context switching, and task priority. AMD has not established an immediate relationship between ACEs and the number of tasks that can be worked on concurrently, so we’re not sure whether there’s a fixed 1:X relationship or whether it’s simply more efficient for the purposes of working on many tasks in parallel to have more ACEs.

    One effect of having the ACEs is that GCN has a limited ability to execute tasks out of order. As we mentioned previously GCN is an in-order architecture, and the instruction stream on a wavefront cannot be reodered. However the ACEs can prioritize and reprioritize tasks, allowing tasks to be completed in a different order than they’re received. This allows GCN to free up the resources those tasks were using as early as possible rather than having the task consuming resources for an extended period of time in a nearly-finished state. This is not significantly different from how modern in-order CPUs (Atom, ARM A8, etc) handle multi-tasking.
    Source

  2. #2
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    That would definitely give this APU pretty long legs through a console generation. That would be an incredibly versatile design.

  3. #3
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    interesting stuff in the web jumped in on half a thread on there

    http://forum.beyond3d.com/showthread...=63108&page=24

    So in this link they found japanese pdf on scej translated it.


    Full specs

    Main Processor Single-chip custom processor
    CPU : x86-64 AMD “Jaguar”, 8 cores
    GPU : 1.84 TFLOPS, AMD next-generation Radeon™ based
    graphics engine
    Memory GDDR5 8GB
    Hard Disk Drive Built-in
    Optical Drive
    (read only)
    BD 6xCAV
    DVD 8xCAV
    I/O Super-Speed USB (USB 3.0) 、AUX
    Communication Ethernet (10BASE-T, 100BASE-TX, 1000BASE-T)
    IEEE 802.11 b/g/n
    Bluetooth® 2.1 (EDR)
    AV output HDMI
    Analog-AV out
    Digital Output (optical)

    搭載されている18個のコンピュートユニットは全体で1.84テラフロップスの演算能
    力を有し、その性能をグラフィック機能やコンピューティング機能、またはその二つに自由に割り 当てることが 可能です。

    Translate: 18 CUs free to dedicate to graphics or compute efforts as devs like.

    14+4 seems to be out the window.

    The link full stuff such

    さらに、PS4™のコンテンツの楽しみ方を広げる専用アプリケーション“PlayStatio n®App” を提供いたします。”PlayStation®App”をiPhone、iPad、およびアン ドロイドOS 搭載のスマートフォンやタブレット*3にインストールすることで、PS4™のセカンドスクリー ンとして利用 し、例えば、アドベンチャーゲームを遊んでいる時に地図情報を手元で確認するといった今までに ない楽しみ方 が可能になります。また、外出先からPS4™のゲームを購入しご自宅のPS4™に直接ダウンロ ードする、あ るいはPS4™で遊んでいる友人のゲームプレイを離れた場所から鑑賞することなどができます。

    Through an app, iphones, ipads, can also act as a second PS4 screen.
    Android devices too.

    Sounds like the Wii mount for the Wand. Use it for say radar in alien like in the film.

  4. #4
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    Quote from AMD-“It is by far the most powerful APU we have built to date.” I see no reason to be worried.

    http://www.psu.com/a018544/AMD-says-...-we-have-built
    Last edited by PS4freak; 02-28-2013 at 21:17.




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    Quote Originally Posted by ps3freak18 View Post
    Quote from AMD-“It is by far the most powerful APU we have built to date.” I see no reason to be worried.

    http://www.psu.com/a018544/AMD-says-PS4s-APU-is-the-most-powerful-we-have-built
    yep less worried architecture now.

  6. #6
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    Quote Originally Posted by ps3freak18 View Post
    Quote from AMD-“It is by far the most powerful APU we have built to date.” I see no reason to be worried.

    http://www.psu.com/a018544/AMD-says-...-we-have-built
    I'm loving the ps4 more and more by the day.


  7. #7
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    Quote Originally Posted by ps3freak18 View Post
    Quote from AMD-“It is by far the most powerful APU we have built to date.” I see no reason to be worried.

    http://www.psu.com/a018544/AMD-says-...-we-have-built
    Agreed! It will be awesome to see what developers are able to make on this console! I think we are all going to be in for a wonderful ride over the next several years!

    -=[ PSN ID: Tha_MonkeyClaw ]=-

  8. #8
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    Yeah. I don't know why there is so much doom and gloom revolving around this.
    Last edited by PS4freak; 02-28-2013 at 21:32.




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  9. #9
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    there isnt but then ppl are coming up with silly excuses to hate on it..."but but but they didnt show the actual box!" $#@! OUTTA HERE

  10. #10
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    Makes you want to hit them in the head with a coconut.

    She put the lime in the coconut, she drank them both up.

    http://youtu.be/5LxC3M-Yngs

  11. #11
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    I don't no no $#@! about these specs but dam they look great lol.
    GDR.jpg


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  12. #12
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    Awesome find, this gpu could be a custom video card.

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