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Thread: A GPU-Mainboard information

  1. #1
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    Cool A GPU-Mainboard information

    We can see that maximum mainboards' PCIE slot delivers upto 4Gb/s memory bandwidth support. But when i'll attach a PCIE with 57 or 35Gb/s bandwidth, won't it fully wiork then? If not, WHY? If yes, HOW?

    Please let me know!

    Another thing is that, I saw only IntelX38 mainboard supporting upto 8Gb/s PCIE bandwidth. Is there anything else without it? Because it is too expensive. Obviously it needs to be Intel.

  2. #2
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    youre confused, there is no PCI-E card with more than 4GB interconnect bandwidth usage. What we are talking about here is the interconnect speed, not the card itself. PCI-E x16 has a 4GB/s bandwidth, and most Video cards use a little more than half of that. The figures you are quoting are the bandwidth within the PCI-E card itself (and based on your figures, your probably talking about a Video Card).

    X38 motherboards have 8GB/s bandwidth since they have two PCI-E x16 slots (4GB x 2), nVidia 780i/790i has 12Gb/s since they have 3 PCI-E x16 slots, and AMD 790FX has 16GB bandwidth since they have 4 PCI-E x16 slots

  3. #3

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    Quote Originally Posted by Mazhar View Post
    youre confused, there is no PCI-E card with more than 4GB interconnect bandwidth usage. What we are talking about here is the interconnect speed, not the card itself. PCI-E x16 has a 4GB/s bandwidth, and most Video cards use a little more than half of that. The figures you are quoting are the bandwidth within the PCI-E card itself (and based on your figures, your probably talking about a Video Card).

    X38 motherboards have 8GB/s bandwidth since they have two PCI-E x16 slots (4GB x 2), nVidia 780i/790i has 12Gb/s since they have 3 PCI-E x16 slots, and AMD 790FX has 16GB bandwidth since they have 4 PCI-E x16 slots
    imba said mazhar
    i agree with u

  4. #4
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    Please go to
    http://www.nvidia.com/object/graphic...s_buy_now.html

    What bandwidth it is?

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    it is the bandwidth between the core of the graphics card, and the memory in the card(both are located in the video card FYI).

    Hence, it is not related to the interconnect (PCI-E x16) between the motherboard and the video card. It is concerned only with the video card. Interconnect bandwidth has reached a maximum of around 2.4-2.6 GB/s, and those are highly overclocked 9800GX2's

  6. #6
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    thanks a lot

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