PowerVR Rogue Architecture

Discussion in 'Mobile Graphics Architectures and IP' started by Rys, Oct 17, 2014.

Tags:
  1. Lazy8s

    Veteran

    Joined:
    Oct 3, 2002
    Messages:
    3,100
    Likes Received:
    18
    The new MediaTek win shows acknowledgement that performance efficiency is still expected to be a differentiating factor in upcoming mobile products. GPU compute is finally coming into its own on mobile where it's enabling the device to understand what its actually seeing in a photo, intelligently manipulate the composition and effects based on that, and show the user a real-time preview when capturing and editing, as well as improving computer vision and even speech recognition for a variety of other intelligence and security related functionalities.

    As for the A10's GPU, Apple had made previous generational performance gains without utilizing much of the low hanging fruit of ramping clock speed. Seeing as the CPU got most of its gain from that this time around, the A10 GPU is perhaps a higher clocked variant of or customized GT7600 or GT7600+. However, something to consider is, in addition to the claim of a 50% performance improvement, Apple also claimed 2/3rds the power consumption. On a similar manufacturing node, that could be possible with process optimizations and improvements to physical implementation, yet it would require an impressive effort in those areas in their own right.
     
  2. ToTTenTranz

    Legend Veteran Subscriber

    Joined:
    Jul 7, 2008
    Messages:
    9,302
    Likes Received:
    3,958
    Of course not. They should be financing full ports like nvidia did, but without the ridiculous hardware exclusivity.
     
  3. Tabris

    Newcomer

    Joined:
    Sep 24, 2011
    Messages:
    44
    Likes Received:
    16
    http://www.pcworld.com/article/3151...u-powervr-gpu-as-it-looks-to-bounce-back.html

     
  4. Ailuros

    Ailuros Epsilon plus three
    Legend Subscriber

    Joined:
    Feb 7, 2002
    Messages:
    9,408
    Likes Received:
    172
    Location:
    Chania
  5. Arun

    Arun Unknown.
    Moderator Legend Veteran

    Joined:
    Aug 28, 2002
    Messages:
    5,010
    Likes Received:
    249
    Location:
    UK
    http://i3.kym-cdn.com/photos/images/facebook/000/000/069/O_RLY-Quite.jpg

    One thing that's incorrect in the AnandTech article is that the number of USCs is 2x too high for all cores; i.e. GE8200 is 0.25 USCs and GE8340 is 2 USCs. Note that GE8100 is also 0.25 USCs so it's actually faster than it looks despite the minimal area (but it loses a few instructions so it's very slightly less efficient).
     
  6. Ryan Smith

    Regular Subscriber

    Joined:
    Mar 26, 2010
    Messages:
    590
    Likes Received:
    911
    Location:
    PCIe x16_1
    Hmm, are you sure about that? When I was supplied the GE8200/8300 last year, half a cluster and 1 cluster were the figures I was given.
     
    FriendlyNeighbour likes this.
  7. Ailuros

    Ailuros Epsilon plus three
    Legend Subscriber

    Joined:
    Feb 7, 2002
    Messages:
    9,408
    Likes Received:
    172
    Location:
    Chania
    Probably a very dumb question, but I'm wondering how it's possible to go as low as to a quarter of a cluster. My original understanding of first Rogue cores was that the "base" configuration was 2 clusters with a quad TMU; going all the way down from 32 lanes to 4 doesn't sound as simple as to cut a cake into pieces and separate them.
     
  8. Rys

    Rys AMD RTG
    Moderator Veteran Alpha

    Joined:
    Oct 9, 2003
    Messages:
    4,129
    Likes Received:
    1,301
    Location:
    Beyond3D HQ
    The SIMD width has always been pretty configurable in the RTL, so while there's still the validation overhead, actually baking out a core with less than the normal number of parallel data pipelines is reasonably straightforward at this point.
     
  9. Ailuros

    Ailuros Epsilon plus three
    Legend Subscriber

    Joined:
    Feb 7, 2002
    Messages:
    9,408
    Likes Received:
    172
    Location:
    Chania
    Thank you. On a sidenote ducks and gnomes are boring; after watching Trolls maybe you should consider something small cute and with lots of hair as the next mascot ;)
     
    Lodix likes this.
  10. Ailuros

    Ailuros Epsilon plus three
    Legend Subscriber

    Joined:
    Feb 7, 2002
    Messages:
    9,408
    Likes Received:
    172
    Location:
    Chania
    https://www.imgtec.com/news/press-r...r-savings-in-mediateks-new-helio-x30-chipset/

    I understand for the highlighted part a DX11.x variant of the 7400P, which is hopefully not some marketing "typo".
     
  11. Rys

    Rys AMD RTG
    Moderator Veteran Alpha

    Joined:
    Oct 9, 2003
    Messages:
    4,129
    Likes Received:
    1,301
    Location:
    Beyond3D HQ
    It's not DX11 compliant, but it does have hardware tessellation (which exists in other APIs that we support).
     
  12. Ailuros

    Ailuros Epsilon plus three
    Legend Subscriber

    Joined:
    Feb 7, 2002
    Messages:
    9,408
    Likes Received:
    172
    Location:
    Chania
    That (probable) typo is a wee bit too generous with clusters for the X30 GPU:

    https://www.imgtec.com/blog/imagination-gdc-2017-demos-on-show/

    GT7400 Plus = 4 clusters.
     
  13. tangey

    Veteran

    Joined:
    Jul 28, 2006
    Messages:
    1,403
    Likes Received:
    148
    Location:
    0x5FF6BC
  14. Ailuros

    Ailuros Epsilon plus three
    Legend Subscriber

    Joined:
    Feb 7, 2002
    Messages:
    9,408
    Likes Received:
    172
    Location:
    Chania
    That's more like business as usual. If their claims should reflect reality then this is one hell of a piece of IP they just announced: https://www.imgtec.com/news/press-r...and-half-the-bandwidth-of-nearest-competitor/

    https://www.imgtec.com/blog/why-the-powervr-2nx-nna-is-the-future-of-neural-net-acceleration/
     
    BRiT likes this.
  15. lanek

    Veteran

    Joined:
    Mar 7, 2012
    Messages:
    2,469
    Likes Received:
    315
    Location:
    Switzerland
Loading...

Share This Page

  • About Us

    Beyond3D has been around for over a decade and prides itself on being the best place on the web for in-depth, technically-driven discussion and analysis of 3D graphics hardware. If you love pixels and transistors, you've come to the right place!

    Beyond3D is proudly published by GPU Tools Ltd.
Loading...