AMD: Southern Islands (7*** series) Speculation/ Rumour Thread

Discussion in 'Architecture and Products' started by UniversalTruth, Dec 17, 2010.

  1. 3dilettante

    Legend Alpha

    Joined:
    Sep 15, 2003
    Messages:
    8,579
    Likes Received:
    4,797
    Location:
    Well within 3d
    Partially resident textures.
     
  2. Alexko

    Veteran Subscriber

    Joined:
    Aug 31, 2009
    Messages:
    4,532
    Likes Received:
    957
    Partially Resident Textures. "Mega Texturing" by AMD.
     
  3. Lightman

    Veteran Subscriber

    Joined:
    Jun 9, 2008
    Messages:
    1,947
    Likes Received:
    933
    Location:
    Torquay, UK
    .exe and it still is down for me ...

    http://developer.amd.com/pages/amd404.aspx

    That's the page I'm getting.

    EDIT:

    Just tried one more time after switching back and forth between IE9 and FF9 and it works again!
     
  4. CNCAddict

    Regular

    Joined:
    Aug 14, 2005
    Messages:
    290
    Likes Received:
    2
    Demo looks really smooth but it could use some AO lovin. Some parts look like they have AO, but the interface of the old mans shoes and the floor it still looks like he's floating in space.

    Kudos for putting up any demo at all...we are getting less and less in the way of demos these days (games or graphics demos). Also...it might be time to start doing some OpenCL demos (physics etc). Need something to get people excited.
     
  5. ToTTenTranz

    Legend Veteran

    Joined:
    Jul 7, 2008
    Messages:
    12,751
    Likes Received:
    7,763
    Eeeeerm..
    The exe is for developers only?
     
  6. cal_guy

    Newcomer

    Joined:
    Jun 27, 2008
    Messages:
    217
    Likes Received:
    3
    You don't really have to be a developer to sign up.
     
  7. Brad Grenz

    Brad Grenz Philosopher & Poet
    Veteran

    Joined:
    Mar 3, 2005
    Messages:
    2,531
    Likes Received:
    2
    Location:
    Oregon
    Ran pretty well on my 6950. Looked very nice. The only thing that stuck out to me compared to a CGI render was the way the old man's shoulder joints looked in motion.
     
  8. psolord

    Regular

    Joined:
    Jun 22, 2008
    Messages:
    444
    Likes Received:
    55
    True that.

    My 5850 Crossfire run it at 30fps average, with both cards running at 950/1250. Crossfire support is there as well although the cards are not maxing out and it is not a cpu limit. It needed the 12.2 preview to run correctly. It was crashing with 12.1.

    Amazing graphics if I might add. I honestly thought that I was watching a CGI rendered video.

    I wonder how well the 7970 runs it.

    My 570s were showing a black screen for the most part as well! :S I wonder if Nvidia can do something to fix that, if they care.
     
  9. AlphaWolf

    AlphaWolf Specious Misanthrope
    Legend

    Joined:
    May 28, 2003
    Messages:
    9,342
    Likes Received:
    1,538
    Location:
    Treading Water

    Stolen from hardforums

     
  10. psolord

    Regular

    Joined:
    Jun 22, 2008
    Messages:
    444
    Likes Received:
    55
  11. Man from Atlantis

    Regular

    Joined:
    Jul 31, 2010
    Messages:
    937
    Likes Received:
    780
    [​IMG]

    Pitcairn XT 1408SP 299$, Pro 1280 249$
    Cape Verde XT 896SP 149$, Pro 832 139$

    ComputerBase
     
  12. AnarchX

    Veteran

    Joined:
    Apr 19, 2007
    Messages:
    1,559
    Likes Received:
    34
    Probably based on the questionable Lenzfire "leak".

    At Newegg HD 6850 is below $150. So HD 7770 with less perfomance (see MSI roadmap), ~125mm² GPU and 128-Bit IMC should be <= $129.
     
  13. Alexko

    Veteran Subscriber

    Joined:
    Aug 31, 2009
    Messages:
    4,532
    Likes Received:
    957
    Looks like AMD decided to clock the 7950 as low as they could without actually losing to the GTX 580. I think this suggests an attempt to maximize yields with the main constraint being the need to outperform the 580. To me, this further shows that TSMC's 28nm suffers from pretty huge variability.

    I wonder how much they think they can improve upon this over time. Damien was able to take his sample down to 0.9V without touching clocks, taking perf/W to new heights. He also voiced hope that AIB partners would pick up on this and bin chips for low-voltage, releasing "Green editions" that actually deserve the name.
     
  14. DuckThor Evil

    Legend Veteran

    Joined:
    Jul 9, 2004
    Messages:
    5,961
    Likes Received:
    1,020
    Location:
    Finland
    I think it's more to do with keeping a distance to the 7970, to make people fork even more money and buy a 7970 instead. It seems again that the scaling of SP's is quite low so further gimping was required. Until I see or hear a chip having difficulties reaching +900mhz with 1.0x voltage, I don't buy the maximizing yield argument for the chosen clock.

    All in all the performance seems to be a little bit better than I expected from such specs.
     
  15. TKK

    TKK
    Newcomer

    Joined:
    Jan 12, 2010
    Messages:
    148
    Likes Received:
    0
    The 5770 initially cost more than 4870 as well, despite somewhat lower performance.
     
  16. Kaotik

    Kaotik Drunk Member
    Legend

    Joined:
    Apr 16, 2003
    Messages:
    10,045
    Likes Received:
    4,260
    Location:
    Finland
    Though it didn't take long 'till 5770 actually outperformed 4870 slightly
    I wouldn't put too much weight on the roadmap product placement, I mean, 7950 is between 6970 and 6950 on it, too, even though it outperforms 6970 by some 15-20%, not to mention that fitting 2 new models between 6870 and 6950, when they have ~12% performance difference between them, is extremely unlikely.
     
  17. mczak

    Veteran

    Joined:
    Oct 24, 2002
    Messages:
    3,021
    Likes Received:
    119
    I don't buy the yield argument neither. As far as I can tell both HD7970 and HD7950 can be overclocked to almost exactly the same, and power consumption is also similar IF the voltage is the same. But HD7950 has lower default voltage(s) which definitely eats into the overclocking potential (hence it's more like ~1000Mhz at stock voltage rather than ~1150Mhz for the HD7970), of course it also plays a role why the cards hardly draw more power than GTX560Ti and are quiet (at least some of them).

    According to that roadmap, Cape Verde gets released before Pitcairn which seems a bit odd.
    In any case now that we know how scaling is with more shader units, I'm still wondering what Pitcairn (and Cape Verde) looks like. The shader number (for both) somehow suggests it is possible to have CU groups of size 2 (or 1 for Cape Verde) instead of 4, or that CUs within a group can be disabled (but this seems a bit unlikely to me, since it would mean the chips in their full configuration have CU groups of dissimilar size).
     
  18. seahawk

    Regular

    Joined:
    May 18, 2004
    Messages:
    511
    Likes Received:
    141
    78X0 series will be very interesting..
     
  19. AlphaWolf

    AlphaWolf Specious Misanthrope
    Legend

    Joined:
    May 28, 2003
    Messages:
    9,342
    Likes Received:
    1,538
    Location:
    Treading Water
    http://forum.beyond3d.com/showpost.php?p=1608701&postcount=2081

     
  20. mczak

    Veteran

    Joined:
    Oct 24, 2002
    Messages:
    3,021
    Likes Received:
    119
    Yes I know still CU size 1 just sounds odd as I thought the reason to have groups of 4 in the first place is because of lower overhead, so especially for lower end devices it just sounds strange. We'll see if the CUs have any other changes.
     
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...