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AMD Radeon HD 7790 "Bonaire" Detailed Some More

Discussion in 'News' started by btarunr, Mar 11, 2013.

  1. Casecutter

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    Read my edit above... I wouldn't wait for a $130 price... AMD and AIB will just let 7850 1Gb slip from the channel over the next couple of weeks.
    I'd will-call them from Egg now, and get on the 57Frwy... and start the fun tonight!:toast:
    suraswami says thanks.
  2. itsakjt

    itsakjt

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    How will this be as an upgrade to my overclocked 6770? (See specs)
  3. NeoXF

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    Should more or less, be at HD 6950 levels of performance... So... go from there...
  4. itsakjt

    itsakjt

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    Ahh that will be great for me. :)
  5. Novaguy New Member

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    I see them getting rid of the 7850 1gb and sliding in the Bonaire into the 650 Ti price, maybe slightly cheaper, and then the 7850 2gb can slide down in price a little as the next round of price cuts take effect.

    I also don't think the 7790 will have 896 units, it most likely would have 768 shader units. Shades of what AMD did between the 5000 series and the 6000 series (5670 had 400 shaders, 6670 had 480, etc) - just add another increment of shaders as the process technology at 28nm gets better.

    I remember seeing rumors of a 768 shader radeon 8770, with 128 bit, maybe 192 bit memory, and suspect that the 7790 is the new name. This way they can just test out the drivers for GCN 2.0's without too much bad press as to their halo product having bad fps, and then when the GCN 2.0 drivers are optimized bring out the 8000 series in late 2013/early 2014.
  6. Xzibit

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    Rumors

    Bonaire Pro = 640 VS / 40 TC / 16 ROPs / 128-bit / ?GB
    Bonaire XT = 768 VS / 48 TC / 16 ROPs / 128-bit / ?GB

    Hainan LE = 1024 VS / 64 TC / 32 ROPs / 256-bit / ?GB
    Hainan Pro = 1536 VS / 96 TC / 32 ROPs / 256-bit / ?GB
    Hainan XT = 1792 VS / 112 TC / 32 ROPs / 256-bit / ?GB

    Venus LE = 2048 VS / 128 TC / 32 ROPs / 384-bit / ?GB
    Venus Pro = 2304 VS / 144 TC / 48 ROPs / 384-bit / 3GB
    Venus XT = 2560 VS / 160 TC / 48 ROPs / 384-bit / 3GB
    Venus XTX = 2560 VS / 160 TC / 48 ROPs / 384-bit (x2) / 6GB
  7. T4C Fantasy

    T4C Fantasy CPU & GPU DB Maintainer

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    venus is mobile only and I doubt there will be a mobile part with 2.5k shaders
  8. itsakjt

    itsakjt

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    I think the 7790 will be 192 bit or 256 bit as the 6790 itself was 256 bit.
  9. Xzibit

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    Just put those up since they been floating around for a few months.

    If it ends up being Bonaire. The other two names are mostly likely to be Aruba & Curacao. Named after the Dutch Caribbean ABC Islands
    or
    Caribbean Netherlands BES Islands
    Bonaire, Sin Eustatius, Saba
    Last edited: Mar 11, 2013
  10. Casecutter

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    A) The 6790 was on a gleded "Barts", so is why it had 256-Bit.

    B) Show me another AMD/ATI that has used 192-Bit?

    C) 768Sp is 20% over the 640 of Cape Verde, 896Sp would 40%; while 896Sp part would be ~12% less the 7850 1024Sp of the 7850 Pitcairn. Consider there's about a 50% difference in perfromance from 640/1024 (plus over 100% memory bandwidth) I'm leaning to the 896Sp part while holding to a ~90 Gb/s memory bandwidth on 128-Bit. That might be what they need to be as they said close to a 7850, along with the 7770 more than 25% behind a GTX650Ti I think a 896Sp part will be. Unless the GNC2 has more bang in each shader.
    Last edited: Mar 11, 2013
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  11. AlienIsGOD

    AlienIsGOD

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    From Tom's a few mins ago: http://www.tomshardware.com/news/AMD-Radeon-7790-Saturn-GPU,21447.html

    from the article "The HD 7790 will feature 786 shader processors instead of the previously indicated 896, a clock rate of 1075 MHz and 2 GB of GDDR5 memory over a 128-bit interface and support DirectX 11.1 and OpenGL 4.3."

    also "According to a now redacted result posted on CL benchmark's website, the HD 7790 can be expected to provide 10 percent lower performance than a HD 7850."

    Finally "The Radeon HD 7790 has a recommended price of £118 and will be available in April 2013."
    Crunching for Team TPU
  12. DarkOCean

    DarkOCean

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    "Interestingly, the HD 7790 is actually based on the 22 nm Bonnaire XT chip and uses the GNC 2.0 "
    Awesome if it's true.
  13. Xzibit

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    If infact its a 22nm I think you can expect a 20-25% performance increase.

    Hmm..
    New Tahiti and GK104 will be nipping at TITAN for less then half the price.
  14. DarkOCean

    DarkOCean

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    what new tahiti?
  15. btarunr

    btarunr Editor & Senior Moderator Staff Member

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    AMD has no means of building chips on 22 nm, 786 stream processors is impossible, GNC 2.0 architecture doesn't exist. Besides, that Tom's article cites the same HWI source as me. So Tom's just got things wrong.
    AlienIsGOD says thanks.
  16. Melvis

    Melvis

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    I paid $154 AUS Dollars, and when buying this card you don't realy expect it to be for high res monitors. My GTX 650 Ti will be run on a monitor of 1680*1050 at the most.

    I was going to go with a 7770 but the card was to long for a mini PC build, when the 650 Ti came out it was more powerful, shorter but a little more expensive but worth it. I cant se this new 7790 to be any shorter then the 7770? and performance i have no idea, so over all the 650 Ti still wins in my eyes for people building a PC with very limited space.
  17. Xzibit

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    Intel / Global Foundries / Samsung are all producing 22nm.

    TSMC was skipping 22nm to go 20nm then it realized it was an expensive move (loosing business while transitioning) and started doing 22nm runs in H2 2012

    So all the major players are at 22nm and below.
  18. NeoXF

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    If R7790 is OpenGL 4.3-compliant, that that pretty much makes it confirmed that this is a different architecture than Southern Islands.

    Also that Anand articles someone posted is as old as the one I read from another place... that corrected itself in the meanwhile saying it's 896 actually, again.
  19. btarunr

    btarunr Editor & Senior Moderator Staff Member

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    TSMC isn't making 22 nm, its foundry processes below 28 nm won't enter mass production before Q4 2013, likewise with Samsung. AMD won't give its precious GPU designs to Intel.
  20. Xzibit

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    (GP)IBM, Samsung, Global Foundries & TSMC, UMC are all doing Low volume production runs of 20nm process. Mass production is slated for 2H 2013

    AMD was first to 28nm so might beat Nvidia to 20nm aswell
  21. btarunr

    btarunr Editor & Senior Moderator Staff Member

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    And how does low-volume production help HD 7790, given that HD 7790 is being designed for a highly competitive (high-volume) market segment?
  22. james888

    james888

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    Ya, low volume production wont help. Its a 7790 not a amd olympian special edition card.
    Crunching for Team TPU
  23. Xzibit

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    Its all speculation on what 7790 is at the moment .

    It just seams silly to me that

    Your speculation on his speculation and citing same source and saying my ediotrial is better than his.
    Why not just site the real source instead of linking to a source that links to the source :rolleyes:

    SOURCE for both of yours. Heise (German) English Translated

    Information is there from the real source your both getting it at. Not to mention the source your linking was a day old linking to a 7 day old article.

    More real source linking. Less editorial butchering. ;)
    Last edited: Mar 12, 2013
  24. Casecutter

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    Didn't intend that to slight you personally, sorry! What Mini chassis where you constructing in?

    With the explanation above you've taken into account several of the GTX650Ti good points, while understand it’s limitation. A GTX650Ti are nice cards, low power/heat in a small package, and if like in your case, one of a small group offer several with rear exhaust. All that said Nvidias' pricing is still wacked... and shouldn’t have anyone anteing-up $160 USD especially at this point. But when in the particular circumstances (like your own), its' fitting and with performance to suite, even if it costs in the wallet... you have to go that direction. :rockout:
    Melvis says thanks.
  25. btarunr

    btarunr Editor & Senior Moderator Staff Member

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    Because TechPowerUp's and HWI's articles are closer to Heise's than Tom's. Unless you're dumb enough to find merit in "786 stream processors, GNC 2.0, and 22 nm" (Tom's editorial butchering).

    More commenting on the message, less menstruating on the messenger. ;)
    Last edited: Mar 12, 2013

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