AMD: R8xx Speculation

Discussion in 'Architecture and Products' started by Shtal, Jul 19, 2008.

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How soon will Nvidia respond with GT300 to upcoming ATI-RV870 lineup GPUs

Poll closed Oct 14, 2009.
  1. Within 1 or 2 weeks

    1 vote(s)
    0.6%
  2. Within a month

    5 vote(s)
    3.2%
  3. Within couple months

    28 vote(s)
    18.1%
  4. Very late this year

    52 vote(s)
    33.5%
  5. Not until next year

    69 vote(s)
    44.5%
  1. rjc

    rjc
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    Er the order of the above in botany seems kindof wrong.

    Evergreen trees:
    • Redwood(Cupressaceae) > 100m
    • Cypress(Cupressaceae) 10-70m(three separate families)
    • Juniper(Cupressaceae) 20-40m
    • Cedar 30-40m tall (There are 2 types of cedar one in Pinaceae family, the other is a variety of Juniper)
    • Hemlock(Pinaceae) 10-60m tall

    Seems a bit strange the "Cypress" is ahead of "Redwood" in performance, is a much smaller thing in the plant world.

    Interesting Hemlock and maybe Cedar are in different families to the other 3 trees. Note to others if making up further names that all of above trees appear to be of North American origin.
     
  2. Jawed

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    6 codenames needed

    http://www.semiaccurate.com/forums/showpost.php?p=1152&postcount=6

    What about:
    • Juniper - 800 ALUs, 40 TUs, 16 RBEs, 128-bit - 1.2TFLOPs? 750MHz, since RV740 is 750MHz
    • Cypress - 1600 ALUs, 80 TUs, 32 RBEs, 256-bit - 2TFLOPs+? 700MHz+?
    • 2x Cypress = Redwood - 3200 ALUs, 160 TUs, 64 RBEs, 512-bit - 4TFLOPs+?
    for starters?

    Could some of these codenames be laptop variants?

    Jawed
     
  3. Scrat

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    What about this:

    • Juniper - 1000 ALUs (still 10 clusters, just longer), 40 TUs, 16 RBEs, 128-bit - 1.5TFLOPs - 750MHz
    • Cypress - 2000 ALUs, 80 TUs, 32 RBEs, 256-bit - 3TFLOPs 750MHz
    • 2x Cypress = Redwood - 4000 ALUs, 160 TUs, 64 RBEs, 512-bit - 6TFLOPs

    Too optimistic? :>
     
  4. nbohr1more

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    I think Jaws is hoping for efficiency gains, so this is either optimistic or pessimistic depending on what you hope for... I'm hoping they take the risky route of beefing up the ratio of Vertex specific logic ... kinda like how Nvidia took the risky route of beefing up the GPGPU hardware... I like my triangles!!! Plus, next-gen HOS support?
     
  5. LordEC911

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    Sooo... something to keep in mind, in the Anandtech.com interview it was stated that the designs they are just starting to work on, due out in 2012, are going to be 4TFlops. I assumed that was the top of the line cards, x2 variants included, but now it sounds like they meant just single GPUs.

    So we are looking at ~2-2.5TFlops for RV870, ~3TFlops for the next chip(small refresh/tweak?) in late 2010/early 2011 to meet the ~4TFlops for the 2012 release.
     
    #1205 LordEC911, Jul 22, 2009
    Last edited by a moderator: Jul 22, 2009
  6. Jawed

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    Just another variable. Seems unlikely to change. We've gone over the implications of different SIMD widths.

    Jawed
     
  7. Jawed

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    Jaws is someone else...

    You like lots of triangles and HOS? That's what tessellation is for...

    Jawed
     
  8. Jawed

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    4TFLOPs sounds really conservative to me. Hmm. That should be the bottom card, bearing in mind the rising tide of IGP. Hell, it could be the only chip, hohoho.

    Jawed
     
  9. CJ

    CJ
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    Check your PM and you know where it came from. ;)
     
  10. Jawed

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    I've noticed, separately, Hudson and Manhattan codenames on mobile roadmaps - something I forgot to mention earlier, so yes, New York New York :cool:

    So D3D11 laptops are coming soon?...

    Jawed
     
  11. phenix

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  12. hoom

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    ATI already has its Edge Detect AA mode since R600.

    The prospect of an MCM GPU that looks like a single GPU with 32 ATI RBEs at 700+Mhz is very exciting from an AA point of view even with plain old MSAA :grin:
     
  13. CarstenS

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    Sorry, I don't get it: What's your point?
     
  14. rjc

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    Ha ha didn't notice this before....

    Above orginally from originally from cfcnc at chiphell. There is only one likely to be considered a poison in the lineup, therefore the high end dual card codename is "Hemlock". It's actually the non toxic Tsuga but easily confused with the toxic shrub Conium

    That screws my previous theory of the order being based on the tree's size...Looking again at the five available codewords, Hemlock is in a different family:
    Cupressaceae: Cypress, Juniper, Cedar, Redwood
    Pinaceae: Hemlock

    ie The Cupressaceae family is older and spread all over the world, the Pinaceaes relatively young and more concentrated, northern hemisphere, northern climes only.

    Have a feeling am putting much more effort into this than whoever invented these codenames...:wink:
     
  15. nbohr1more

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    Sorry Jawed ... I think Jaws is a Rage3d regular if I'm not mistaken...?
    When I say HOS ... I'm thinking of curved surface support..? Somehing that was hinted to be in the Gamecube GPU... I thought tessellation only amplifies triangle, I though HOS has to do with non-triangle based geometry... I am probably using the wrong term :oops:
     
  16. Jawed

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  17. nbohr1more

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    I still haven't found the reference but I could have sworn that some developer said that the Gamecube Flipper had something similar to the Nvidia NV1\STG-2000 quadratic texture mapping technology (non-triangle based rendering) but it was specialized just for curved surface effects... it may even have been Factor 5 with RS II : RL
     
  18. nbohr1more

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    I re-read the HOS documentation so I won't be mistaking that for quadratic texture mapping any time soon...
     
  19. Kaotik

    Kaotik Drunk Member
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  20. 3dilettante

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    At best, he may have correctly matched up essentially meaningless code names to the product segments they target, and the September time frame would be intact.

    It seems odd that redwood would be so far down, and inserting a picture of a flowering plant for the evergreen line violates the theme.

    Not sure what else there is to say.
     
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