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ATI Radeon HD 4770 Info Leaked

By - Source: Tom's Hardware US | B 29 comments

Japanese website PC Pop managed to acquire a batch of slides pertaining to the upcoming ATI Radeon HD 4770, complete with the first 40nm desktop chip.

Japanese website PC Pop managed to acquire a batch of slides pertaining to the upcoming ATI Radeon HD 4770, complete with the first 40nm desktop chip.

You have to admit: there's something sweet about leaked images, whether they're stills from an upcoming movie or the hardware specs of an upcoming graphics card. In this case, PC Pop scored the latter, acquiring six slides showcasing the upcoming ATI Radeon HD 4770.

According to the provided specs, the Radeon HD 4770 (RV470) will run faster than Nvidia's 9800GT, and one slide even announces its $99 price point, lower than the 9800GT's current price tag ranging from $119 to $139. A head-to-head slide reveals that the Radeon HD 4770 features 40nm processing; the 9800GT uses 65nm and 55nm processing. Additionally, the Radeon HD 4770 provides GDDR5 memory, 960 GLOPs of processing power, 12.0 GFLOPS per watt, and 9.7 GFLOPS per dollar. Nvidia's 9800GT isn't quiet as spectacular, using GDDR3 memory and offering 504 GFLOPs of processing power; users also get 4.8 GFLOPs per watt and 5.1 GFLOPs per dollar. To rub Nvidia's face even more into the dirt, AMD's new card supports DirectX 10.1; the 9800GT supports DirectX 10.

Is there a big difference between DirectX 10 and 10.1? A chart provided by AMD shows an improvement, using the PC game STALKER: Clear Sky as a benchmark. Set at 1920x1200 during the day, the game's DirectX 10.1 patch cranks up the frames per second to almost 40. That's not exactly fluid, however it's slightly better than 36 frames per second supplied by DirectX 10. By turning on the sunshafts, DirectX 10.1 still performs better than DirectX 10 without shafts, cranking out around 38 frames per second; DirectX 10 is only capable of 35 frames per second with sunshafts activated.

Outside the DirectX performance, the ATI Radeon HD 4770 features 826 million transistors; the 4670 uses 514 million and the 4850 uses 956 million. Clocking at 750 MHz, the 4770 also features 640 stream processors, a memory clock of 800 MHz using a 128-bit memory bus, a frame buffer size of 512 MB, and consumes 80 watts of power. While the card clocks at the same speed and uses the same memory bus as the 4670, it offers better performance using GDDR5, however it's still not quite as speedy as the 4850. With a compute performance of 1.0 TFLOPs, the 4850 coughs up a core clock of 625 MHz, but provides 800 stream processors, GDDR3 memory using a 256-bit bus, and a memory clock of 1000 MHz to make up the difference.

Sitting between the 4670 and 4850, the upcoming Radeon HD 4770 doesn't look too shabby, and with a $99 price tag, the card should be quite the hot item when it hits retail shelves soon. To check out all eight slides, click on the 4770 pictured above.

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  • 1 Hide
    Anonymous , April 15, 2009 6:44 PM
    Good I can't wait for the prices to drop even more so I could afford to do sli with my 9800gt 1gb.
  • 2 Hide
    LATTEH , April 15, 2009 7:21 PM
    the card sounds good but i wonder if it will be able to do DX11 when it comes out XD
  • 2 Hide
    Anonymous , April 15, 2009 7:22 PM
    40 fps is fluid!
    Anything below 20-25 becomes laggy and unplayable.
    I'm sure you won't even notice the extra fps, but as a former ati fan, I can be happy to know it still holds the crown!
  • 0 Hide
    hannibal , April 15, 2009 7:27 PM
    Well now $99 is really coming the new middle range cards price segment. Let's hope that allso entry level $35-50 will see some speed up. Because it's those cards that define the main game development because they are the most selled cards around (after integrated graphics of course...)
  • 2 Hide
    solymnar , April 15, 2009 7:27 PM
    Seems nice. The proof of course is always in the benchmarks (and finding out how much headroom it has as a new 40nm part).

    Also have to wonder how hot and loud it runs since it advertises more performance per watt and is on a smaller process while still having a double slot cooling mech.

    Either way filling in brackets and increasing competitive pressure is usually a win for us consumers. :) 
  • -1 Hide
    hellwig , April 15, 2009 7:32 PM
    Why don't GPU's follow CPU scaling? CPUs went from 65-45nm, but GPUs went from 65-55-40nm? Wouldn't it make sense (especially since AMD/GlobalFoundry produces both CPUs and GPUs) to use the same process?
  • -1 Hide
    eklipz330 , April 15, 2009 8:51 PM
    i know the article ceases to mention this, but this is a replacement for the 4830, and you would think the 4830 is better than the 4770, but they're about the same..4770 might be a little better cause of the gddr5

    i think ati is learning naming schemes from nvidia =[
  • 2 Hide
    sublifer , April 15, 2009 9:02 PM
    eklipz330i know the article ceases to mention this, but this is a replacement for the 4830, and you would think the 4830 is better than the 4770, but they're about the same..4770 might be a little better cause of the gddr5i think ati is learning naming schemes from nvidia =[

    From what I hear they're retiring the 4830 and at least they went backwards on the numbering... shouldn't be many confused souls out there trying to upgrade from a 4830 to a 4770 (which may or may not be an upgrade) I'd rather this than they rebadge a 3870 as a 4820 or whatever (That'd be closer to what nvidia has been doing)
  • 0 Hide
    Mucke , April 15, 2009 9:26 PM
  • 0 Hide
    ct1615 , April 15, 2009 9:36 PM
    1. it looks like a linear move from the 4830, not a real upgrade (although both are excellent cards)

    2. does anyone really care about DX10.0 with DX 11 around the corner?
  • 1 Hide
    eklipz330 , April 15, 2009 10:01 PM
    ct16151. it looks like a linear move from the 4830, not a real upgrade (although both are excellent cards)2. does anyone really care about DX10.0 with DX 11 around the corner?


    1. yes, its supposed to be linear, but with a lesser power requirement i think

    2. i don't think dx11 will catch on as fast as people think...maybe one or two games to set the bar, but it really has to be something to overtake dx9, which dx10 cudn't do
  • 0 Hide
    JustinHD81 , April 15, 2009 10:22 PM
    I think the editor should have a good look at the article before publishing it....there's just a few too many mistakes for this article to be worthy of Tomshardware's usually good quality. RV470 anyone? simple mistake, but a very large one RV740 will be the HD4770 and HD4750.
  • 0 Hide
    Yuka , April 15, 2009 10:39 PM
    Notice the benchies using 1600x1200+ resolutions on a $99 card... On lower resolutions might be a bigger difference.

    I'd like to see some XFire benchies of this little puppy.

    Esop!
  • 0 Hide
    scarpa , April 15, 2009 10:39 PM
    This 4770 sounds interesting with the 40nm process, I might pick one up just because it's the first on 40 nm not to say that it beats by far anything from Nvidia in the same price range.
  • 0 Hide
    kelfen , April 15, 2009 10:46 PM
    Well this card is more of a test for the new process; and also packs a punch as far as performance/$.
  • 1 Hide
    hellraiser06 , April 15, 2009 11:05 PM
    Excellent card. Should bring the prices of othercards down too.
    Moving to 40nm process would mean a reduction in price of current gen cards in a month or two after its release, which is good for me coz I am thinking of buying 4870 or 260. Let's see what happens.

    DX11-> I don't think it would catch on before a few years. So, 4870 or 260 FTW..
  • -1 Hide
    deltatux , April 16, 2009 12:06 AM
    This news is at least a week old? I already saw those slides last week.
  • -1 Hide
    waffle911 , April 16, 2009 1:58 AM
    A card of this caliber at $99... I remember when Sims 2 first came out, I bought my first ever hardware upgrade for my now 5-year-old HP with 256MB of RAM and integrated 800 series Intel GPU (and not an AGP or PCI-E to be found). It was an Nvidia GeForce FX5200 256MB, PCI edition: $99. I salvaged two 512MB sticks of RAM from a similar, older (and dead) computer I had sitting around to help out.
    I knew enough about computers to know it would work, and it did; and it made Sims 2 playable at reasonable framerates, though it still skipped here and there. Heck, it even played UT2004 at good framerates.
    On a 1024x768 15" LCD monitor that came with the computer. Back then, I didn't know sites like this even existed.
    It still serves EVE Online playing purposes to this day at playable framerates (read: 10fps average, OK for a MMORPG where twitch-gameplay is not necessary and with my less-than-stellar reflexes wouldn't have made a difference anyway, except visually) until I graduate from high school and have time to get a part-time job to buy something a little more recent. This card sounds to be a good idea for that project.
  • -2 Hide
    SpadeM , April 16, 2009 6:19 AM
    Innovation vs. Rebranding ... got to love that photo :) . But hey if applying a new sticker works for Nvidia cudos to them. Ultimately it's up to us to choose what part we put in our systems.
  • -1 Hide
    v1ze , April 16, 2009 6:23 AM
    ProDigit8040 fps is fluid!Anything below 20-25 becomes laggy and unplayable.I'm sure you won't even notice the extra fps, but as a former ati fan, I can be happy to know it still holds the crown!


    ...old people :\

    anything below 60fps becomes laggy. although playable, it hurts ur ability to play the game. ur fps should be higher than ur monitor's refresh rate to keep the smooth feel as a minimum requirement. just like vsync should be off. all of these factors change ur aim while playing.

    granted, i'm in the minority as a high level fps gamer....
    first time poster, long time reader ==]:^{)>
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