AMD RV770 refresh -> RV790

Discussion in 'Architecture and Products' started by w0mbat, Nov 10, 2008.

  1. ChrisRay

    ChrisRay <span style="color: rgb(124, 197, 0)">R.I.P. 1983-
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    Was basically shrunken NV45 with some functionality fixes.
     
  2. Pressure

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    A product they canned, based on a 0.11 micron process. It was supposed to fight R520.
     
  3. Jawed

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    Will the AMD RV790 Architecture be Something Different?

    This article provides a nice bit of perspective:

    http://www.pcper.com/article.php?aid=675

    Sure, I own a signature that's looking about 10% likely, but I think his conclusions are badly argued as he doesn't weigh the alternatives in any depth and is misguided on some significant points (e.g. the reason for the double-precision throughput of AMD's architecture).

    Jawed
     
  4. neliz

    neliz GIGABYTE Man
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    With the supposed release less than a month away now. wouldn't those things be known about now? Even if the board partners speak of, just that why would we be expecting anything different?

    But then, why would ati take over 9 months for what's basically a slightly altered and optimized chip?
    a 20% upclocked RV770 would suggest to me that RV790 isn't what it was supposed to be.

    Right now I'm leaning more towards this "RV770+" (which equals a GTX285 by all means) than a RV790 that would actually win.
     
  5. AnarchX

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    http://www.xtremesystems.org/forums/showthread.php?t=217833&page=9

    So it seems nearly to be confirmed, that 4890 is just a high-power clock-up of RV770.

    Lets see what the AIBs could squeeze out it for their OC-SKUs.
    In one point the standard 4890 allready seems to beat the GTX 285 - power consumption. :lol:

    there was an edit by OBR:
     
  6. no-X

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    Take it with a grain of salt :) OBR told us, that he has a sample. Than he wrote, that RV790 is slower than GTX260-216, because he has it at home and he can compare it. Than he told us, that he has no compatible driver, so he can't test it (how could he find out, that the board is slower than GTX260-216?) - this question was never answered or explained. He didn't show any single picture of the card, any single screenshot, so... :roll:
     
  7. AnarchX

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  8. neliz

    neliz GIGABYTE Man
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    how can it be slower when the 4870-1GB is just as fast? Heck, how does he know anything if he can't get the card up?
     
  9. Tridam

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    AMD's official documents sent last month to board partners mentionned 800 SPs for RV790. Not many more info in there as these docs are used to give partners high level marketing advices to sell the product.
     
  10. neliz

    neliz GIGABYTE Man
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    Basically, that's what the slides from last November said too. "same process as RV770, significant increase in SCP and clock speeds"
     
  11. v_rr

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    That dude is a fanboy. For many times in the past it lied about products (by RV770 time said that it was only a bit faster then RV670 and other lies).
    He is the only with RV790 in the hands in the world :roll:

    Problem 1: If it were 220W it would definitely need 8pin + 8pin.
    Problem 2: 100Mhz bump does not justify 220W (50W EXTRA) neither.
     
    #611 v_rr, Mar 9, 2009
    Last edited by a moderator: Mar 9, 2009
  12. CJ

    CJ
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    I stopped reading OBRs post after he called people imbeciles and told people to cry because RV790 was slower than GTX 260 Core 216. I stopped believing his posts long before that.
     
  13. Kaotik

    Kaotik Drunk Member
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    No it wouldn't, 6+8pin is max the PCIE specs allow, and they allow up to 300W (75W slot 75W 6pin 150W 8pin)
     
  14. v_rr

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    true. I taked statement from Xtremesys.

    A renamed Geforce4 MX?
    For the same day Nvidia has nothing. Only a new wave of price drops.
     
  15. INKster

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    Or..., one or more of the GT21x GPU's... ;)
     
  16. AnarchX

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    Whats about a GTX 260-216 with higher clocks or a half GTX 295 with 240SPs?
     
  17. Jawed

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    Half GTX295 sounds like a good idea :grin:

    Jawed
     
  18. JoshMST

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    Oh man, I haven't been here in ages. Posted the article, then thought... wonder what the B3D fellows are having to say about it all. Then of course you all have 25 pages worth of a topic on RV790...

    The PCPer article I wrote was merely speculative, and I of course could be so wrong as to be laughable (when am I not?). Just seems to me that it would be very strange if AMD were to design a new chip that just improved clockspeed and power consumption, especially when looking at their past design history.

    As for how double precision is handled... my understanding is that in the group of 5 stream processors, one was double precision and the other 4 were single precision (plus that group of 5 has the general registers assigned to them and the branch prediction unit). Is my understanding of this incorrect?
     
  19. Arty

    Arty KEPLER
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    GT212? The last we heard of, didnt tape out.

    I'm not sure how Nvidia will fight a GTX285 equalling RV790 with anything other than the GT212.

    The only logicial, possible reaction from Nvidia at this point seems to be .. price cuts. :sly:
     
  20. no-X

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    The same trick as for NV47? Reportedly canceled, but in fact renamed and launched as new generation...
     
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