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Hardware AMD Radeon 7970 3GB GHz Edition Review

Discussion in 'Article Discussion' started by Baz, 22 Jun 2012.

  1. Harlequin

    Harlequin Modder

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  2. The_Crapman

    The_Crapman Don't phone it's just for fun. Staff

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    Ah. I thought the jetstream was also overclock. Silly me!:rolleyes:
     
  3. xxxsonic1971

    xxxsonic1971 W.O.T xxxsonic1971

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    nice1 AMD!!!! maybe see some bargain basement 680's soon?
     
  4. MjFrosty

    MjFrosty What's a Dremel?

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    :wallbash:
     
  5. ssj12

    ssj12 Minimodder

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    the entire issue with the GTX680 ia 2GBs of ram. If it has 3GBs those numbers would be different.
     
  6. Elton

    Elton Officially a Whisky Nerd

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    Sadly they could not make a HD7990 (like the 4890) and have it be clocked much higher. The limits of silicon approaches.
     
  7. David

    David μoʍ ɼouმ qᴉq λon ƨbԍuq ϝʁλᴉuმ ϝo ʁԍɑq ϝμᴉƨ

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    How do you figure that?

    CPC tested a 2Gb 680 alongside a 4Gb model and saw no appreciable difference between the two.
     
  8. Elton

    Elton Officially a Whisky Nerd

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    Multi monitor gaming I believe.
     
  9. Valinor

    Valinor What's a Dremel?

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    I think it was more the limited bandwidth than the actual amount of memory.
     
  10. Elton

    Elton Officially a Whisky Nerd

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    Increasing RAM size would do nothing, it would either take a wider bus or faster RAM.

    An increase in RAM size then would only be effective if the games tested used a higher resolution. Hence my multi-monitor gaming remark.
     
  11. rollo

    rollo Modder

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    680 2gb is not memory restricted outside of multi moniter resolutions. been proven on this forum by alot of different people

    7970 uses more memory cause its there to use but games dont require it.
     
  12. silky

    silky What's a Dremel?

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    For those who want to compare with older cards, there is a website somewhere which lets you compare anything with anything. Unfortunately I lost the link :(
     
  13. Skulldragon

    Skulldragon What's a Dremel?

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    Do you mean this website?: http://www.hwcompare.com/

    It's a pretty useful resource, however, unless there are actual game benchmark comparisons for the two cards you are trying to compare, it can be difficult to know how the theoretical differences translate into in-game performance
     
  14. Baz

    Baz I work for Corsair

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    Just repeating what others have said; 4GB versions of the 680 are no faster than 2GB versions, even at 5,760 x 1080 (three-screen surround). It's the bus-size that's the limiting factor, something that using higher density chips do not help.
     
  15. Action_Parsnip

    Action_Parsnip What's a Dremel?

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    I too think that bandwidth is an issue with the 680. The ratio of compute to bandwidth has dropped HUGELY compared to the GTX 580, for starters.

    Also if you look at power consumption on 680 SLI in multimonitor situations Battlefield 3 , despite being the most graphically demanding current title, does not draw the most at the wall. It is also known to be HIGHLY memory bandwidth sensitive.** I would theorise that the higher turbo states do not engage in this game at this resolution due to the GPUs not having enough data on hand to warrant maximum clock speeds.

    http://hardocp.com/article/2012/03/28/nvidia_kepler_geforce_gtx_680_sli_video_card_review/8

    In this test Deus Ex. records the highest power consumption number I would guess due to it being both the *least* bandwidth sensitive title and best matching it's coding to the architecture of the GTX 680 GPU.


    ** See Battlefield 3 test results run with the VERY bandwidth limited Gefore GT 640 GDDR3

    http://www.anandtech.com/show/5969/zotac-geforce-gt-640-review-/10
     
  16. xxxsonic1971

    xxxsonic1971 W.O.T xxxsonic1971

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    the 3gb 7970 is the sweet spot, most powerful gpu on the planet!!!
     
  17. silky

    silky What's a Dremel?

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    Yeah thats the link thanks :) I bookmarked it now.
     
  18. Fizzl

    Fizzl What's a Dremel?

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    Some data on how two of these perform on 6048*1080 (because who plays without bezel correction?) vs the 690 would be nice. After all you could get two for the price of a 690.
     

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