AMD: R7xx Speculation

Discussion in 'Architecture and Products' started by Unknown Soldier, May 18, 2007.

Thread Status:
Not open for further replies.
  1. Wirmish

    Newcomer

    Joined:
    May 4, 2007
    Messages:
    160
    Likes Received:
    0
    No, I already explain how AMD can pack 800 SP in this small chip -> here

    :wink:
     
  2. randomhack

    Newcomer

    Joined:
    Apr 4, 2008
    Messages:
    41
    Likes Received:
    0
  3. AlphaWolf

    AlphaWolf Specious Misanthrope
    Legend

    Joined:
    May 28, 2003
    Messages:
    8,415
    Likes Received:
    270
    Location:
    Treading Water
    #3503 AlphaWolf, Jun 14, 2008
    Last edited by a moderator: Jun 14, 2008
  4. Shtal

    Veteran

    Joined:
    Jun 3, 2005
    Messages:
    1,344
    Likes Received:
    3
  5. Pete

    Pete Moderate Nuisance
    Moderator Veteran

    Joined:
    Feb 7, 2002
    Messages:
    4,934
    Likes Received:
    329
    I'm pretty sure they just post whatever info they're given without vetting it, and that info is wrong in this case. The 3DMark perlin test scores confirm 800 SPs at 625MHz.
     
  6. no-X

    Veteran

    Joined:
    May 28, 2005
    Messages:
    2,297
    Likes Received:
    247
    Maybe other numbers could be helpful, too...

    3DMark 2006

    fillrate - single texturing:
    HD4850: ~ 7300
    HD3870: ~ 6500
    RV670X2: ~ 11400

    fillrate - multi texturing:
    HD4850: ~ 19800
    HD3870: ~ 12300
    RV670X2: ~ 25300

    pixel shader:
    HD4850: ~ 680
    HD3870: ~ 360
    RV670X2: ~ 710

    vertex shader - simple:
    HD4850: ~ 292
    HD3870: ~ 315
    RV670X2: ~ ?

    vertex shader - complex:
    HD4850: ~ 160
    HD3870: ~ 180
    RV670X2: ~ 370

    shader particles:
    HD4850: ~ 160
    HD3870: ~ 90
    RV670X2: ~ 170

    perlin noise:
    HD4850: ~ 335
    HD3870: ~ 175
    RV670X2: ~ 355
     
  7. Lukfi

    Regular

    Joined:
    Apr 27, 2008
    Messages:
    423
    Likes Received:
    0
    Location:
    Prague, Czech Republic
    =>no-X: Didn't you say we were not supposed to publish these? :grin:
     
  8. CarstenS

    Veteran Subscriber

    Joined:
    May 31, 2002
    Messages:
    4,797
    Likes Received:
    2,056
    Location:
    Germany
    Interestingly, shader particles seemed a bit bandwidth bound on R6x-generation, as HD2900 XT scored about 128 there. But maybe that was just some buffer overflowing and spilling into VRAM, which might have been alleviated with HD4800-series.
     
  9. no-X

    Veteran

    Joined:
    May 28, 2005
    Messages:
    2,297
    Likes Received:
    247
    The time has come :wink:
     
  10. Entropy

    Veteran

    Joined:
    Feb 8, 2002
    Messages:
    3,056
    Likes Received:
    1,020
    When analyzing the test data from the HD4850, I think its worth remembering that the RV770 may have been designed targeting GDDR5, and that some of these early data may be unusually bandwidth constrained.
    It will be very interesting to compare the two memory options both in particular feature tests, and in applications.
     
  11. spajdr

    Newcomer

    Joined:
    Jun 11, 2007
    Messages:
    19
    Likes Received:
    0
    Location:
    Ostrava, Czech Republic
    If i may add, i know its R7xx thread, but just for comparison i add Geforce 280GTX score

     
  12. air_ii

    Newcomer

    Joined:
    May 2, 2007
    Messages:
    134
    Likes Received:
    0
  13. fellix

    fellix Hey, You!
    Veteran

    Joined:
    Dec 4, 2004
    Messages:
    3,486
    Likes Received:
    397
    Location:
    Varna, Bulgaria
    RV770 vs. RV670 vs. G92 clean compilation:

    [​IMG]

    Measure it for yourself. ;)
     
  14. nexus_alpha

    Newcomer

    Joined:
    Nov 25, 2006
    Messages:
    44
    Likes Received:
    0
    Heaven knows when they will reach volume for at less then 100 good dies per wafer.
     
  15. air_ii

    Newcomer

    Joined:
    May 2, 2007
    Messages:
    134
    Likes Received:
    0
    Looks like roughly 44% larger. However a top shot rather than an angled and rotated shot would be much better for comparison, since you can't exactly tell when the side of the chip begins.
     
  16. fellix

    fellix Hey, You!
    Veteran

    Joined:
    Dec 4, 2004
    Messages:
    3,486
    Likes Received:
    397
    Location:
    Varna, Bulgaria
    ~272 mm² by my accounts, relating to RV670 size, on that picture.
     
  17. CarstenS

    Veteran Subscriber

    Joined:
    May 31, 2002
    Messages:
    4,797
    Likes Received:
    2,056
    Location:
    Germany
    Seconded. Maybe, the die'd need another shrink for that to happen? ;)
     
  18. Wirmish

    Newcomer

    Joined:
    May 4, 2007
    Messages:
    160
    Likes Received:
    0
    So I was right -> 276 mm² :cool:

    edit: 176 -> 276 :oops:
     
    #3518 Wirmish, Jun 14, 2008
    Last edited by a moderator: Jun 14, 2008
  19. nexus_alpha

    Newcomer

    Joined:
    Nov 25, 2006
    Messages:
    44
    Likes Received:
    0
    Sure maybe if you edit the number a little :smile:
     
  20. Silent_Buddha

    Legend

    Joined:
    Mar 13, 2007
    Messages:
    16,051
    Likes Received:
    5,003
    I'd love to see a performance chip come out at 176 mm² in the present... ;)

    Regards,
    SB
     
Loading...
Thread Status:
Not open for further replies.

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...