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  1. #1
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    Nvidia with their all out GTX385?

    according to a news on Nordichardware, the specs for GTX385 has been unveiled in a German website, they made a comparison with the current single card flagship GTX285.

    GTX285 vs GTX385

    GPU clock 648MHz vs 700MHz

    Memory clock 2484MHz effective vs 4400MHz effective

    Memory bus 512-bit vs 512-bit

    Shader clock 1476MHz vs 1600 MHz

    Theoretic perf. 933 Gflops vs 2457 Gflops

    Memory bandwidth 159.0 GB/s vs 281.6 GB/s

    I cant be sure how true the news is, but just thought of sharing with all of you bros.

    but i was hoping a higher GDDR5 clock rather than "just" 4.4Ghz effective. but the 512 bit memory bus can compensate a lot I think.

    original article : GT300 taped out, respectable frequencies | NordicHardware

  2. #2
    Registered User psolord's Avatar
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    Nordichardware just reposted what hardware-infos posted a few days ago. They say so in the article!

  3. #3
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    Quote Originally Posted by psolord View Post
    Nordichardware just reposted what hardware-infos posted a few days ago. They say so in the article!
    and seeing how hardware-infos makes things up for views...I would take this with a pile of salt

  4. #4
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    Unless there's a huge architectural change from the current design, i can't see how such a card could exist. Near 3x theoretical performance? I highly doubt it. You'd be lucky to get 2x the performance in my opinion unless there's something we don't know that nvidia has up their sleeves.

  5. #5
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    but there is another rumour saying that GT300 is packed with MIMD SP compared to SIMD SP for the past few generations. the article seems pretty real, though no one can tell for sure right now.

    now we will just wait for the next gen card war between AMD & Nvidia, and probably Intel will join in too.

  6. #6
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    Even if this is true this is bad news for Nvidia at least in SPP where Nvidia's top dog 385 scores 2457 Gflops and if we take the word of the same website ATi's 5870 scores 2160 Gflops.

    This is almost the same difference between a 4870 and a GTX 285. The thing is 5870 is suppose to be half a card that the 385 is. 5870 x2 would score something like 2x 2280 Gflops which is much more than a single 385 could.

    But the fact of the matter is ATi is not really useing all this muscular power Nvidia has several CUDA app's and ATi stream has how many??

    Supposed 5870 specs - RV870 to become Radeon HD 5870 with 1200 shaders? | NordicHardware

  7. #7
    Registered User Niceone's Avatar
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    Quote Originally Posted by Ajai_dev View Post
    Even if this is true this is bad news for Nvidia at least in SPP where Nvidia's top dog 385 scores 2457 Gflops and if we take the word of the same website ATi's 5870 scores 2160 Gflops.

    This is almost the same difference between a 4870 and a GTX 285. The thing is 5870 is suppose to be half a card that the 385 is. 5870 x2 would score something like 2x 2280 Gflops which is much more than a single 385 could.
    Well at least Nvidia would slightly catch AMD here.

    GTX 285 -> GTX 385 would be 130% increase
    HD4870 -> HD5870 would be 90% increase

    In current generation single HD4870 has 13% higher Gflops number than GTX 285. In next generation GTX 385 would habe 9% higher Gflops number.

    Also nothing on what kind of performance hit HD5870 will have with double precision?

    GTX 285 - 89 (Gflops)
    HD4870 - 240
    GTX 385 - 1200

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  8. #8
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    All out? Aren't there 5Ghz GDDR5 chips coming?
    Am I very smart or what?

  9. #9
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    Quote Originally Posted by iamverysmart View Post
    All out? Aren't there 5Ghz GDDR5 chips coming?
    I remember reading an article on internet (cant remember which website) saying that 7Ghz GDDR5 is ready for production.

  10. #10
    Registered User Niceone's Avatar
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    Quote Originally Posted by iamverysmart View Post
    All out? Aren't there 5Ghz GDDR5 chips coming?
    Perhaps for "EVGA GTX 385 XXX FTW LOL OC" model? (yeah would be overkill)

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  11. #11
    Registered User NextGen_Gamer's Avatar
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    Quote Originally Posted by iamverysmart View Post
    All out? Aren't there 5Ghz GDDR5 chips coming?
    All out? Did you not read the part about 281.6GB/sec of memory bandwidth? The GeForce GTX 285 only has 159GB/sec; that means NVIDIA is adding ~120GB/sec on top of that. I'm pretty sure that memory bandwidth is already overkill for G300, even with its supposed 512 MIMD cores. Here, let me make a couple more comparisons to show just how ridiculous G300's memory bandwidth is:

    G300 - 281.6GB/sec
    Radeon HD 4870 X2 - 230.4GB/sec (Combined Between Both GPUs)
    GeForce GTX 295 - 223.8GB/sec (Combined Between Both GPUs)
    GeForce GTX 285 - 159.0GB/sec
    GeForce GTX 280 - 141.7GB/sec
    Radeon HD 4890 - 124.8GB/sec
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  12. #12
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    They aren't going all out if they aren't going for the absolute best, simple.

    The bandwidth doesn't look overkill at all. It's proposed theoretical performance is 2.5x the GTX285, the memory isn't even double.

    Quote Originally Posted by NextGen_Gamer View Post
    Radeon HD 4870 X2 - 230.4GB/sec (Combined Between Both GPUs)
    GeForce GTX 295 - 223.8GB/sec (Combined Between Both GPUs)
    Technically the speed is double but effectively that isn't how it works.
    Am I very smart or what?

  13. #13
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    Quote Originally Posted by iamverysmart View Post
    They aren't going all out if they aren't going for the absolute best, simple.

    The bandwidth doesn't look overkill at all. It's proposed theoretical performance is 2.5x the GTX285, the memory isn't even double.



    Technically the speed is double but effectively that isn't how it works.
    that's not really solid logic when talking about consumer grade video cards. if they went "all out" a single card would cost thousands of dollars.

    they're going for the absolute best while attempting to maintain a price point that I'd predict to be $600~650 retail at launch.

    also I believe he was posting theoretical bandwidth speeds to show just how much bandwidth this card may be packing. considering it is higher than the theoretical bandwidth of a dual GPU solution it's quite a drastic increase in bandwidth.

  14. #14
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    Quote Originally Posted by NextGen_Gamer View Post
    All out? Did you not read the part about 281.6GB/sec of memory bandwidth? The GeForce GTX 285 only has 159GB/sec; that means NVIDIA is adding ~120GB/sec on top of that. I'm pretty sure that memory bandwidth is already overkill for G300, even with its supposed 512 MIMD cores.
    The extra memory bandwidth will probably be beneficial for the GPGPU crowd for more than gamers. However, there are supposed to be display port based monitors with resolutions greater than 2560 x 1600 coming out sometime this year (example). The extra memory bandwidth will come in handy for playing games at those resolutions. Oddly enough, price becomes less of a factor because if you can afford such a high resolution monitor, getting a GT300 based card isn't going to empty your wallet.

    I also heard about the 7 Ghz GDDR5 chips going into production sometime this year. The reason behind this jump in bandwidth stem from a smaller manufacturing process for the memory chips. My calculations for GT300 chip using that 7 Ghz GDDR5 equates to 448 GB/sec of memory bandwidth. That's double what the GTX295 can do with both GPU's.

  15. #15
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    I think its not a must to have such high mem bandwidth at this point in time. Considering that most gamers are still on 1920x1080 kindda resolution. All the extra bandwidth will just add on to the cost of the card, which Nvidia could have made a more affordable chip instead. I have a strong feeling that unless Nvidia can pull a really great card this time, it will be the underdog again given its usual pricing strategy. Just a speculation tho.
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