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Thread: Radeon 390/390x Rumor thread

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    Default Radeon 390/390x Rumor thread

    Advanced Micro Devices’ next-generation graphics processing unit is still several months away, but it looks like it is worth waiting. According to unofficial information from SiSoft Sandra benchmark’s database, the forthcoming GPU features unprecedented compute horsepower as well as uses multi-layer high-bandwidth memory with extreme bandwidth.

    If the listing in Sandra’s database is correct and really describes a prototype of the Radeon R9 390X “Fiji XT” graphics card, the next-generation offering from AMD will feature 4096 stream processors (SPs) (which, in case of the GCN 1.2 architecture, means 64 compute units and 256 texture units) and 4096-bit memory bus. The memory sub-system will rely on SK Hynix’s stacked high bandwidth memory (HBM) chips with 1024-bit input/output interface (compliant with the Wide IO standard)




    The graphics card allegedly sports only 4GB of memory since the first-generation HBM features 2Gb DRAM dies and comes in 1GB memory devices, reports Wccftech. Only the second-generation HBM is expected to use 8Gb dies and therefore support 4GB and 8GB configurations.

    If AMD’s Radeon R9 390X actually uses four first-generation HBM DRAM chips with 4096-bit memory bus operating at 1.25GHz, then the actual memory bandwidth the graphics card will sport will be whopping 640GB/s.



    With 4096 stream processors and amount of bandwidth never before seen on a single-chip graphics cards, the Radeon R9 390X will be the fastest graphics adapter on the market. In fact, with such extreme amount of stream processors, it will clearly leave behind any graphics solution based on Nvidia Corp.’s GM200 graphics processing unit.



    While performance-wise the Radeon R9 390X “Fiji XT” seems to be very powerful, it remains to be seen how expensive will it be. New types of memory tend to cost a lot. Moreover, given that memory devices have to be placed on the same piece of substrate with the GPU, the whole graphics card has to be redesigned.

    - - - Updated - - -




    Source: http://www.kitguru.net/components/gr...ory-bandwidth/

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    we will be starting talking about that after minimum 4 months

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    Hynix 8GHz 3D stackable GDDR5 memory:
    Hynix started shipping its 3D stackable HBM (High-Bandwidth Memory) GDDR5 memory, stacked means more memory cells per IC. The chips have a capacity of 4Gb and are clocked at 8 Gbps. According to some, these chips would be used by AMD's Radeon R9 390X.



    As it stands, AMD's best GPU; the Radeon R9 290X, has its memory frequency hitting around 5-6GHz, while NVIDIA's enjoys things a little higher, at 7GHz. SK Hynix's new chips increase the frequency up to 8GHz, in 4Gb chips, which should see some deliriously fast GPUs on offer for the next-gen.


    With AMD's Radeon R9 390X rumored to have a 4096-bit bus, this memory shipping could indicate we're closer to seeing a next-gen GPU not only from AMD, but NVIDIA. AMD's R9 290X has a 512-bit memory bus, but this new HBM RAM could really kick things up a notch, especially with AMD partnering up with SK Hynix before the rumors of the next-gen GPUs even began.




    Source: http://www.guru3d.com/news_story/sk_...r5_memory.html

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    Alleged AMD R9 390X Benchmarks leaked.






    Source: WCCFTech
    Last edited by Fox Mulder; November 26th, 2014 at 23:30.

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    Now thats a sight for the sore eyes

    Cant see any reason to move from R9 290 Tri-X now

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    Quote Originally Posted by Fox Mulder View Post
    Alleged AMD R9 390X Benchmarks leaked.






    Source: WCCFTech
    Original article is from chiphell . there actually 'r9 300-midrange' was mentioned when translated not r9 390x.
    With that tdp hybrid cooler is pointless and 4000sp count with HBM memory and 4096bit bus having 16% performance advantage seems just wrong.

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    Quote Originally Posted by VANGUARD View Post
    Now thats a sight for the sore eyes

    Cant see any reason to move from R9 290 Tri-X now
    That's 380x actually. Don't get happy yet

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    It's all speculation at this point. Given the TDP and the fact that the actual specs are still not confirmed, a 16% improvement is indeed something. Though there's just no satisfying some people, and we'll probably see the men in green come up with comments like "why isn't it 50% faster?"

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    Quote Originally Posted by Fox Mulder View Post
    It's all speculation at this point. Given the TDP and the fact that the actual specs are still not confirmed, a 16% improvement is indeed something. Though there's just no satisfying some people, and we'll probably see the men in green come up with comments like "why isn't it 50% faster?"
    At least we're not tinkering with the same 28 nunumeter as them.

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    I remember how disappointed nvidia was when AMD demonstrated the HD 7970, and nvidia kept spreading the word about their mystical "big Kepler" chip which some claim to have been saved up for later since AMD's offering at that time wasn't good enough, which later came to be known as the GTX 780(?) and yet, in benches, the difference between the HD 7970, albeit refined, isn't too far off from the GTX 780. At least that's what I saw in Dragon Age: Inquisition, 1080p. Just goes to show, charging all that premium for their products, then putting the money into pursuing developers to cater their games for their own products, can sometimes backfire on them when the opposition chooses to do the same to them.
    Last edited by Fox Mulder; November 27th, 2014 at 05:14.

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    Here I thought "ReadON" is some new tech.

    Please correct the thread title.
    Last edited by Rubab; November 27th, 2014 at 17:14.

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