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PowerColor Radeon HD 4890 Pictured

Discussion in 'News' started by btarunr, Mar 17, 2009.

  1. btarunr

    btarunr Editor & Senior Moderator Staff Member

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    The first press-shot of PowerColor's upcoming Radeon HD 4890 accelerator has surfaced on its early listing by German retailer Schottenland.de, from which one can draw several inferences, we will tell you some of the most relevant ones:
    • The Radeon HD 4890 is based on the RV790 GPU, its ASIC and board design is very similar (if not identical) to its predecessor, the HD 4870 / RV770
    • It comes with near-identical specifications, so far its clock speeds seem to be the only specification that sets it apart
    • It comes with a core clock speed of 850 MHz, with a 256-bit wide GDDR5 memory interface, with memory clocked at 975 MHz (effective 3900 MHz, 1950 MHz DDR)
    • It features 800 stream processors, and supports DirectX 10.1, SM4.1
    AMD will make this SKU official on April 8. Listings from Europe, and one from New Zealand, seems to suggest its pricing to be more around the €250 price-point, with its US price positioned at a $249 point.

    [​IMG]
    Last edited by a moderator: Mar 18, 2009
  2. ghost101

    ghost101 New Member

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    850mhz is a 13% improvement. So performance improvements of around 10-13% I'd guess.
  3. ktr

    ktr

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    OMFG, IT LOOKS EPIC... It looks just like the 4870, which looks like the 3870, which looks just like 2900, which looks just like 1950...:laugh:
  4. my_name_is_earl

    my_name_is_earl New Member

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    Hot super clocked card. It should be extremely close to or beat GTX295 when crossfire but it will cost more for 2. Wish there was an X2 version which haven't been officially announced yet :(
  5. Darknova

    Darknova

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    So it's nothing more than an overclocked 4870 1GB?
  6. aj28 New Member

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    I think you're confusing AMD with nVidia... Also, if, as you say, the same board design that sustained the X1950 could continue to sustain a product with several times the X1950's performance, that ought to say something for advancing efficiency on the part of GPU designers and manufacturers.

    I'll agree though, it's a little underwhelming. The margin on this product will be significantly higher than what they're making on the 4870 though, and more than most others in this market, that's where AMD needs to improve their products. As it stands, the increasing success of ATi has had little affect on their financial situation, which I believe to be largely the result of the slim profit they must turn on a lot of their product lineup...
    Last edited: Mar 17, 2009
  7. toyo New Member

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    meh. I can't believe AMD put a new name (RV790) for an OC RV770. So, HD4850 and HD4870 and HD4890 have 800 shaders, different clocks, different types of ddr. RV770 is shared by the first two, what is that is so much more on the HD4890 that it is worth a new "RV"??? It's like AMD liked the Nvidia rebranding that much that they had to come with their own stupidity...
    It seems that for actual games, both Nvidia and AMD are not considering launching new hardware, only adding cores and MHz. we gotta wait for DX11 to see a completly new card, getting a video card upgrade just feels completely unadvised to me by now.
    I really hope I'm being totally mislead, I definatelly don't want AMD to suffer on the market so we reach again Nvidia monopoly... so, here I am, hoping for (many) hidden&untold features of the brand-new RV790...
  8. my_name_is_earl

    my_name_is_earl New Member

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    1950 look nothing like these new card. When you say they look "alike" I'm assuming form factor and not specs. If the had a uber card that powered by hamster wheel then I'm not impressed.

    __________________________________________
    "The following card required a power plant to run"
  9. lemonadesoda

    lemonadesoda

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    More prices here http://geizhals.at/deutschland/?cat=gra16_512&asuch=4890 (check back on friday... lots of prices then).

    RV790
    Remember that RV790 IS A NEW DESIGN. It isnt "just" an OC RV770. What they have done is modified the design slightly to manage hotspots and crosstalk and GDDR5. It's a bit like taking software code and rearranging the order of routines and data within the program... albeit the program has identical functionality. They do this in the CAD software for designing the chips. They have "slightly moved" where the various "processor/shader blocks" and "interconnects" are in the layout. A picture of an RV770 and an RV790 will look similar, but not identical. They may have even increased the size (or changed density) of shader blocks to manage heat, and may have also debugged some microcode... just like the Radeon 9800 over the Radeon 9700. Marginal differences.

    Otherwise, yes, it is the same architecture. But the layout of the die is "slightly" different, so warrants a new code. A bit like a new stepping on a CPU.
    Roph says thanks.
  10. toyo New Member

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    indeed "a bit" like the new stepping :) an "M0" hidden somewhere in cpu-z is nothing like this boasted RV790-omg-the-new-GPU. but, if it'll get to 1 ghz... who knows, i am really expecting to read the review... sooner then soon ;)
  11. btarunr

    btarunr Editor & Senior Moderator Staff Member

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    It is very difficult to get a HD 4870 to run at 850/975 MHz on air-cooling. This indeed isn't just an overclocked RV770, since an RV770 can't run stable at those speeds in its existing form.
    Nick89 says thanks.
  12. mdm-adph

    mdm-adph New Member

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    Perhaps it's a 40nm version of the same chip with higher clocks?

    If Nvidia can do it, I guess ATI can too. I'm just glad they didn't go ahead and change the number to 5000.
  13. Jizzler

    Jizzler

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    Pretty.

    I was wondering, has anyone done a 4870/4890 with the power connectors on the side, and not on the end?

    If not, Sapphire/PowerColor/etc could you make me one? kthxbye.
  14. WarEagleAU

    WarEagleAU Bird of Prey

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    The probably made subtle changes to the RV 770 line to get RV 790. Lets not lump them in with nvidia. At least they are refreshing or improving on the one name change they did. I dont see what the deal is with this anyways.
  15. ktr

    ktr

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    So they look 95% alike...;)

    ATI 1950XTX
    [​IMG]
    ATI 2900XT
    [​IMG]
    ATI 3870
    [​IMG]
    ATI 4870
    [​IMG]
    ATI 4890
    [​IMG]
    Nick89 says thanks.
  16. my_name_is_earl

    my_name_is_earl New Member

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    Form factor could mean many things. Like: you can kill someone if you threw the graphic card at them and they are equally hurt as well :)
  17. MadClown

    MadClown New Member

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  18. ktr

    ktr

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    more like this:

    [​IMG]
  19. Hayder_Master

    Hayder_Master

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    and it is just like 5870
  20. mdm-adph

    mdm-adph New Member

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    Well, at least they're all different cores, unlike the 8800GT/9800GT/GTS240 fiasco. :D

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