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. Wirmish

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    Personally I prefer the new black Ruby.... :cool:


    EDIT:

    Red Ruby : YouTube
    Black Ruby : YouTube (watch in HD)
     
    #1621 Wirmish, Aug 15, 2009
    Last edited by a moderator: Aug 15, 2009
  2. digitalwanderer

    digitalwanderer Dangerously Mirthful
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    :shock::shock::shock:

    Oh man, now THIS is the kind of silly season excitement I LIVE FOR!!! :D
     
  3. turtle

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    Ha...I was just looking at that. That's pretty bad ass.

    I wish AMD would sell that shit...I'd buy it...something to appease the fanboi in me jealous of those with their bad-fill keychains. My ATi mini fridge is so lonely...jk.
    [​IMG]


    Any advertising is good advertising...Did AMD actually learn this?

    Granted, that's probably the only one, as it's all their PR/Advertising could afford.

    Yeah, I said it...you know you were thinking it.
     
    #1623 turtle, Aug 15, 2009
    Last edited by a moderator: Aug 15, 2009
  4. BRiT

    BRiT Verified (╯°□°)╯
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    And a blow up doll...
     
  5. Squilliam

    Squilliam Beyond3d isn't defined yet
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    I want... where can I has both?
     
  6. rjc

    rjc
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    Nordic Hardware, March 2008 version:
    Nordic Hardware, August 2009 version:
    Who said people don't learn from their mistakes? :wink:
     
    #1626 rjc, Aug 15, 2009
    Last edited by a moderator: Aug 15, 2009
  7. NH|Delph1

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    ;)
    The misinformation campaign from the pre-RV770 era mislead several of my sources. And they actually confirmed 480sps, but were wrong (very annoying experience...). AMD managed to screw with practically every news site in the Western media.

    You should perhaps disregard the ROPs calculation in my older news post. I must have been tired. Whether its 192 or 384-bit for RV870 is hard to say, but I'd prefer to stay conservative. The memory bandwidth of 384-bit + DDR5 seems a bit unnecessary, and it would lead to a more expensive PCB, higher costs, etc. etc. not something you identify AMD/ATI with today.

    //Andreas
     
  8. rjc

    rjc
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    Yes must have been very frustrating, i (half) remember something about during the design process for the RV770 the spec was upgraded (pad limiting maybe?), so maybe the 480sps was just out of date information rather than per se wrong information?

    I looked through all the previous ATI cards i could find and i couldn't find any the have any of the memory interfaces you mentioned. Is always 64bit, 128bit, 256bit. I did find the 3200 IGP did use 32bit though at least according to wikipedia.

    Forgive my ignorance but how does a 48bit memory interface work? I was maybe under the false assumption that GDDR3 chips only work in mutiples of 32 bits. I think there is a x16 mode for DDR but would you design a chip around it?
     
  9. NH|Delph1

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    They haven't officially admitted to it, but grins, smiles and the overall smug sense of selfsatisfaction along with some [add Nelson voice]"Ha-Ha"[remove Nelson-voice], and advice of maybe not trusting industry sources in the future (and a drunken admittance) have more or less confirmed the misinformation campaign :)

    If I remember correctly, Theo, Fuad, and many more was fed the exact same info, on purpose ;-)

    All signs point to other memory configurations than the regular 64, 128, 256, but there are many possible multiples of 32 to go with. 192 and 384 are the two that have been mentioned to me though.

    As in the lower range chips, it's much harder to find information. All the cards shown so far has been mid-range. The card at Quakecon is for the $100 segment. And you're right about the 48-bit part, I guess they won't scale below 96-bit. I'm still digging and for some reason there have been extremely few leaks.

    //Andreas
     
  10. rpg.314

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    There werent many real leaks leading up to the launch of rv770 either. So AMD has pretty tght control over them it seems. Personally, I think rv870 will have <1600 alu's, even if it is ~300mm2.
     
  11. Scrat

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    What about this:

    Juniper - 128bit memory interface
    Cypress - 2xJuniper, MCM, 256bit memory interface
    Trillian - 3xJuniper, MCM, 384bit memory interface
    Hemlock - 2xTrillian | 2xCypress, CF on a board, 2x384bit memory interface.

    This would confirm the 384bit rumor...
     
  12. rjc

    rjc
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    I found this in the RV770 article at Anandtech:
    So if you interpret the above as performance = no of shaders. It would have started as 1.5x320=480, then 2x320=640 and finally 2.5x320=800. Maybe they just leaked the first design document?

    Speaking of the original specifications for chips, did you see this from chiphell admin(post #15 in thread)
    Did you see the mobile chips leak a few pages back in this thread? (codenames, memory interfaces and power). I did a post just after with a quick comparison to the RV7X0 mobile parts based on the power used. As lower chips dont scale nearly as well, probably if you were brave, could possibly estimate unit counts and die sizes from that.
     
    #1632 rjc, Aug 15, 2009
    Last edited by a moderator: Aug 15, 2009
  13. mczak

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    Pretty sure this is wrong (though I don't know if that was also true for the older rs690 IGP). Sideport memory is only 16bit. At least I haven't seen any board which uses 2 memory chips...

    Doesn't seem to make much sense indeed, though if you use DDR3 memory instead they only come in 8-bit and 16-bit flavors, not 32-bit, so there wouldn't be a problem.
     
  14. no-X

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    Orton mentioned 96 ALUs (480 SPs) GPU even pre-R600 launch (he likely talked about "R650", which changed to RV770 during time), so some of the rumour could be based upon this info.
     
  15. NH|Delph1

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    Not at all impossible, but when several independent sources say the same thing it becomes harder to explain.

    I noticed, but since I don't know for sure yet I can't really elaborate further. He has a good striking average though.

    //Andreas
     
  16. Vincent

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    Anyone notice the last post by Chiphell's admin-

    It is rumored that RV8XX series will be launched during the mid Sep.

    -------------------------------------------------------------------------------------

    September is the greatest month among the rest in 2009

    1. 12, Septermber---> Porsche Panamera

    2. 16, September-----> AMD's first DX11 product line-up
     
  17. Kaotik

    Kaotik Drunk Member
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    Well we already got the AMD slide/pic whch says September 10
     
  18. w0mbat

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    Maybe its press only...
     
  19. Kaotik

    Kaotik Drunk Member
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    That's a possibility of course, then again, HD4850 part deux is also possible :lol:
     
  20. Humus

    Humus Crazy coder
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    Yup, I have one. :)

    Rubies are red dammit!!!111one :yelling:
     
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