Wow not expecting this at all

Discussion in 'iMac' started by Jay9495, May 22, 2012.

  1. Jay9495 macrumors regular

    Joined:
    Jul 11, 2011
    Location:
    Melbourne Australia
    #1
    I did not think the 7970m would be this good, this makes me happy.

    Ps. I know they won't be this good on an iMacs native resolution, but still.


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  2. beosound3200 macrumors 6502a

    Joined:
    Nov 23, 2010
    #2
    7970m is a marvel of modern technology.

    the only problem is imac could get gtx680M which scores P4900in 3dmark '11

    according to rumors (same ones claiming retina imac) imac is getting 680m
     
  3. DeF46 macrumors regular

    Joined:
    May 9, 2012
    Location:
    Belgium
    #3
    What resolution?

    High details (not "ultra") and 2560x1440 native res and a minimal stable 30 FPS is all I care about.

    If the GPU does not handle most modern games at min. 30 FPS STABLE at native 2560 on the newer iMac, you won't even have the option to scale down to 1920 in a year from now.

    So anything under 2560 benchmarkes is completely, utterly irrelevant to me. Only exception is if the 1920 FPS is like 120 FPS or more, in which case one might reasonably expect it to run OK at native. 80 FPS won't for example, because the cost is not linear. Some shaders just make everything crawl when you go big resolution, but are much more easy on the GPU at lower res.

    So 2560 it is.

    ---

    Also note that the card being tested has 2048MB (2GB video memory).

    And the page is here...

    http://www.notebookcheck.net/AMD-Radeon-HD-7970M.72675.0.html
     
  4. beosound3200 macrumors 6502a

    Joined:
    Nov 23, 2010
    #4
    1920x1080

    but bear in mind, everything cranked up, including aa, af, fxaa etc.

    if you play games without post processing like aa, etc. you'll be able to play every game in the next few years on native resolution and everything set to max

    7970m is at least 50% faster then 6970m, which is a huge upgrade (28nm + gcn = once in a lifetime)
     
  5. DeF46 macrumors regular

    Joined:
    May 9, 2012
    Location:
    Belgium
    #5
    We'll have to see.

    One comforting note is that I remember benchmarks which showed recent nVidia cards have a more stable min FPS. So the equivalent ATI GPU may win on some benches, but the quality gameplay experience is dependent also on minimal frame rates. I'm sorry I don't find the link right now but it has a graph of FPS over time that shows it more clearly.
     
  6. Fynd macrumors 6502

    Joined:
    Aug 11, 2010
    #6
    It really is a hell of a card. I hope they use it. Overclocked and paired with an ivy bridge i7 this thing would easily handle any game I want to play in the foreseeable future at native res.
     
  7. DeF46 macrumors regular

    Joined:
    May 9, 2012
    Location:
    Belgium
    #7
    Sweet, that'll be a darned sweet upgrade from my ol' 4850M :)

    Removing AA sounds fair. I do most of the time.

    However both I and a friend who's got a PC with a 27 inch IPS monitor agree that the aliasing can be seen, even at 2560. It depends on games, I would say.

    AA is nice to have but the performance cost/visual improvement is often not worth it.

    That said, there are newer, post-process AA solutions appearing which are more efficient and looks almost as good. In the January ATI drivers they added support for some of these (AAA, SSAA, etc).

    More info here:

    The Radeon HD 7970 Reprise: PCIe Bandwidth, Overclocking, & The State Of Anti-Aliasing
    http://www.anandtech.com/show/5458/the-radeon-hd-7970-reprise-pcie-bandwidth-overclocking-and-msaa/3
     
  8. leman macrumors 604

    Joined:
    Oct 14, 2008
    #8
    SSAA is a much older technique than the usual (MS)AA and also slower and always will be. Adaptive Anti-Aliasing has been an ATI feature since 2006. Both are not really post-process solutions. You must have misread the article ;) The post-process algorithms they are talking about are smart blurring methods (like nvidias FXAA algorithm).
     
  9. DeF46 macrumors regular

    Joined:
    May 9, 2012
    Location:
    Belgium
    #9
    My bad, I posted what appeared to be a relevant link.

    What I had in mind are the post process filters like FXAA which can be injected via modified DirectX DLLs (such as FXAA Post Process Injector for Skyrim) when the game doesn't support it.

    http://www.hardocp.com/article/2011/07/18/nvidias_new_fxaa_antialiasing_technology

    And there is also an "injector" for SMAA, though on my ol' 4850M there was no noticable FPS gain over traditional AA. But it may well be faster on more recent cards.

    http://www.iryoku.com/smaa/

    http://mrhaandi.blogspot.com/p/injectsmaa.html
     
  10. BlueFinch, May 22, 2012
    Last edited: May 22, 2012

    BlueFinch macrumors newbie

    BlueFinch

    Joined:
    May 1, 2012
    Location:
    Hamm, Germany
    #10
    If this is True i will Not buy the new iMac. The 768 SP Kepler Gpu is Not enough for a New 2000€ device.

    Could you give us the source?

    680m World also mean that the New iMac could First ship in August!!!
     
  11. kitsunestudios macrumors regular

    Joined:
    Apr 10, 2012
    #11
    Honestly, I can't find the rumor about the 680M on the iMac. Closest I can find is one regarding the MacBook Pro, and even that one notes that it contradicts a prior rumor that Apple is avoiding Kepler because of supply issues. Given the constraints of the desktop 680 card, and the lack of any announcent regarding availability of the mobile card, it would surprise me if Apple went that way.

    Also, where did you see a benchmark for the 680m? Last I saw, there still wasn't anything at notebookcheck.com in the benchmark lists.
     
  12. beosound3200, May 22, 2012
    Last edited: May 22, 2012

    beosound3200 macrumors 6502a

    Joined:
    Nov 23, 2010
    #12
    http://www.cultofmac.com/167105/the...pple-hands-out-retina-display-upgrades-rumor/

    but hold your horses, guy here says that leaked p4900 results are invalid, the gtx 680M breaks p6000 with 75W (opposed to 7970m 100W)... that could be interesting
     
  13. kitsunestudios macrumors regular

    Joined:
    Apr 10, 2012
    #13
    Thanks, that one wasn't coming up in my google search.

    680 CUDA could be nice. I know the OpenCL on those hasn't been great, and the CUDA performance no better than the Prior generation. Could be just what I need for Blender's GPU based renderer though.
     
  14. BlueFinch, May 23, 2012
    Last edited: May 23, 2012

    BlueFinch macrumors newbie

    BlueFinch

    Joined:
    May 1, 2012
    Location:
    Hamm, Germany
    #14

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