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    GeForce GTX 680MX vs Radeon HD 6990M Crossfire

    When comparing GeForce GTX 680MX and Radeon HD 6990M Crossfire, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between GeForce GTX 680MX and Radeon HD 6990M Crossfire is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    GeForce GTX 680MX Check Price
    Radeon HD 6990M Crossfire Check Price

    GeForce GTX 680MX and Radeon HD 6990M Crossfire are Laptop Graphics Cards

    Note: GeForce GTX 680MX and Radeon HD 6990M Crossfire are only used in laptop graphics. They have lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with GeForce GTX 680MX or Radeon HD 6990M Crossfire here:

    GeForce GTX 680MX Laptops
    Radeon HD 6990M Crossfire Laptops

    Main Specs

      GeForce GTX 680MX Radeon HD 6990M Crossfire
    Power consumption (TDP) 122 Watt
    Memory type GDDR5 GDDR5
    Maximum RAM amount 2 GB 2x2 GB
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    • GeForce GTX 680MX and Radeon HD 6990M Crossfire have maximum RAM of 2 GB.
    • Both cards are used in Laptops.
    • GeForce GTX 680MX is build with Kepler architecture, and Radeon HD 6990M Crossfire - with Terascale 2.
    • Core clock speed of GeForce GTX 680MX is 5 MHz higher, than Radeon HD 6990M Crossfire.
    • GeForce GTX 680MX is manufactured by 28 nm process technology, and Radeon HD 6990M Crossfire - by 40 nm process technology.
    • Memory clock speed of GeForce GTX 680MX is 1600 MHz higher, than Radeon HD 6990M Crossfire.

    Game benchmarks

    high / 1080p 21−24 35−40
    ultra / 1080p 12−14 21−24
    QHD / 1440p 7−8 16−18
    4K / 2160p 5−6 10−11
    low / 720p 40−45 60−65
    medium / 1080p 27−30 40−45
    The average gaming FPS of Radeon HD 6990M Crossfire in Assassin's Creed Odyssey is 68% more, than GeForce GTX 680MX.

    Full Specs

      GeForce GTX 680MX Radeon HD 6990M Crossfire
    Architecture Kepler Terascale 2
    Code name Blackcomb XTX
    Type Laptop Laptop
    Release date 23 October 2012 12 July 2011
    Pipelines 1536 2240
    Core clock speed 720 MHz 715 MHz
    Transistor count 3540 Million 2x1700 Million
    Manufacturing process technology 28 nm 40 nm
    Texture fill rate 92.2 billion/sec
    Memory bus width 256 Bit 256 Bit
    Memory clock speed 2500 MHz 900 MHz
    Memory bandwidth 160 GB/s
    Shared memory - -
    DirectX 12 API DirectX 11, Shader 5.0
    OpenGL 4.5
    OpenCL 1.1
    CUDA +
    CUDA cores 1536
    Bus support PCI Express 3.0
    SLI options +
    3D Vision +
    Bitcoin / BTC (SHA256) 57 Mh/s
    Laptop size large large
    Optimus +
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