AMD: R9xx Speculation

Discussion in 'Architecture and Products' started by Lukfi, Oct 5, 2009.

  1. mao5

    Regular

    Joined:
    Apr 14, 2004
    Messages:
    276
    Likes Received:
    5
    naked 6970 graphics cards
     
  2. mao5

    Regular

    Joined:
    Apr 14, 2004
    Messages:
    276
    Likes Received:
    5
    naked 6970 graphics cards

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]
     
  3. A.L.M.

    Newcomer

    Joined:
    Jun 2, 2008
    Messages:
    144
    Likes Received:
    0
    Location:
    Looking for a place to call home
    Lower than prices shown on that site, I meant. :wink:
     
  4. fellix

    fellix Hey, You!
    Veteran

    Joined:
    Dec 4, 2004
    Messages:
    3,486
    Likes Received:
    397
    Location:
    Varna, Bulgaria
    Will the 6950 SKU use vapor chamber, too?
     
  5. racca

    Newcomer

    Joined:
    Apr 3, 2010
    Messages:
    51
    Likes Received:
    0
    Not as many as you think.
    CSAA is a mixture of AA q0,q2&q4, the AA factor denotes coverage sample not the underlying MSAA mode, eg. 16xCSAA = 4xMSAA(q4)
    EQAA is simply MSAA set to q=2.




    All in all, AMD traded 16xCSAA for 2xEQAA which I think is marginally better, since 16xCSAA is literally no better than 8xCSAA, while 2x EQAA might prove to be useful when you can't afford 4x MSAA.
     
  6. trinibwoy

    trinibwoy Meh
    Legend

    Joined:
    Mar 17, 2004
    Messages:
    10,428
    Likes Received:
    425
    Location:
    New York
    Theoretical shader throughput is about the same plus a decent bump in bandwidth and fillrate.
     
  7. ZerazaX

    Regular

    Joined:
    Oct 29, 2007
    Messages:
    280
    Likes Received:
    0
    Amazing that naked pics only show up with 2 days left... must be some kind of record for how late these showed up
     
  8. cho

    cho
    Regular

    Joined:
    Feb 9, 2002
    Messages:
    416
    Likes Received:
    2
    2x EQAA = 2 color samples + 4 coverage samples =/= 16x CSAA = 4 color samples + 16 coverage samples, The 4MSAA is a much better AA mode for a 2GB card compare to 2xEQAA.
     
    #6308 cho, Dec 13, 2010
    Last edited by a moderator: Dec 13, 2010
  9. DavidGraham

    Veteran

    Joined:
    Dec 22, 2009
    Messages:
    2,749
    Likes Received:
    2,515
    These are the slides no-X was talking about :

    [​IMG]

    [​IMG]
     
  10. cjo

    cjo
    Regular

    Joined:
    Mar 31, 2010
    Messages:
    349
    Likes Received:
    123
    Pelative Crossfire Shading?

    edit: Should really check for mistakes when posting about mistakes.
     
    #6310 cjo, Dec 13, 2010
    Last edited by a moderator: Dec 13, 2010
  11. psolord

    Regular

    Joined:
    Jun 22, 2008
    Messages:
    443
    Likes Received:
    54

    Wow! Great crossfire scaling on the 69XX! :shock:
     
  12. ferro

    Newcomer

    Joined:
    Apr 8, 2005
    Messages:
    130
    Likes Received:
    0
    Location:
    The Netherlands
    That bodes well for Antilles / 6990.

    Also: more than 200% for Lost Planet 2? Isn't that a bit....unlikely?
     
  13. DavidGraham

    Veteran

    Joined:
    Dec 22, 2009
    Messages:
    2,749
    Likes Received:
    2,515
    4 Tessellation Engines apparently fare better in this game than 2 .
     
  14. no-X

    Veteran

    Joined:
    May 28, 2005
    Messages:
    2,297
    Likes Received:
    247
    I remember, that Eric Demers once explained, that some caches are effectively doubled in CF, so in some rare cases performance can be a bit more than double. Anyway, I have no idea if this is the case...
     
  15. DavidGraham

    Veteran

    Joined:
    Dec 22, 2009
    Messages:
    2,749
    Likes Received:
    2,515
    Now it is becoming obvious that HD 6970 will be about 5-10% faster than GTX 480/570 , which puts it about 10% slower than GTX 580 (@1920x1200 ,4XAA) , this percentage will most likely shrink when 8X AA is used .

    Still , we don't know about HD 6970 performance @2500x1600 resolution , the performance gap may actually change (shrink or increase) , I am hoping the increased frame buffer and memory bandwidth will be put to more use there , shrinking the gap even more .
     
  16. no-X

    Veteran

    Joined:
    May 28, 2005
    Messages:
    2,297
    Likes Received:
    247
  17. Kaotik

    Kaotik Drunk Member
    Legend

    Joined:
    Apr 16, 2003
    Messages:
    8,166
    Likes Received:
    1,836
    Location:
    Finland
    Scaling, you mean :razz:
    But indeed, "Pelative", and "CrossFireX" is written twice as "CrossfireX"
     
  18. rpg.314

    Veteran

    Joined:
    Jul 21, 2008
    Messages:
    4,298
    Likes Received:
    0
    Location:
    /
    Sideport FTW?
     
  19. chavvdarrr

    Veteran

    Joined:
    Feb 25, 2003
    Messages:
    1,165
    Likes Received:
    34
    Location:
    Sofia, BG
    "Lasciate ogne speranza, voi ch'intrate"
     
  20. entity279

    Veteran Regular Subscriber

    Joined:
    May 12, 2008
    Messages:
    1,229
    Likes Received:
    422
    Location:
    Romania
    Unlikely, otherwise there would have been slides boasting just that.

    Even if not leaked explicitly, I expect they would have been mentioned by now.

    Right, neliz ?:D
     
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...