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    GeForce GTX 1080 Max Q vs Radeon HD 6990M Crossfire

    If you are going to buy a new graphics card and are choosing between GeForce GTX 1080 Max Q and Radeon HD 6990M Crossfire, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce GTX 1080 Max Q stacks up against Radeon HD 6990M Crossfire, check out specs charts below.
    GeForce GTX 1080 Max Q Check Price
    Radeon HD 6990M Crossfire Check Price

    GeForce GTX 1080 Max Q and Radeon HD 6990M Crossfire are Laptop Graphics Cards

    Note: GeForce GTX 1080 Max Q 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 1080 Max Q or Radeon HD 6990M Crossfire here:

    GeForce GTX 1080 Max Q Laptops
    Radeon HD 6990M Crossfire Laptops

    Main Specs

      GeForce GTX 1080 Max Q Radeon HD 6990M Crossfire
    Power consumption (TDP) 150 Watt
    Interface PCIe 3.0 x16
    Supplementary power connectors None
    Memory type GDDR5X GDDR5
    Maximum RAM amount 8 GB 2x2 GB
    Display Connectors No outputs
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    • GeForce GTX 1080 Max Q has 6 GB more memory, than Radeon HD 6990M Crossfire.
    • Both cards are used in Laptops.
    • GeForce GTX 1080 Max Q is build with Pascal architecture, and Radeon HD 6990M Crossfire - with Terascale 2.
    • Core clock speed of GeForce GTX 1080 Max Q is 386 MHz higher, than Radeon HD 6990M Crossfire.
    • GeForce GTX 1080 Max Q is manufactured by 16 nm process technology, and Radeon HD 6990M Crossfire - by 40 nm process technology.
    • Memory clock speed of GeForce GTX 1080 Max Q is 9100 MHz higher, than Radeon HD 6990M Crossfire.

    Game benchmarks

    high / 1080p 50−55 35−40
    ultra / 1080p 35−40 21−24
    QHD / 1440p 27−30 16−18
    4K / 2160p 16−18 10−11
    low / 720p 80−85 60−65
    medium / 1080p 60−65 40−45
    The average gaming FPS of GeForce GTX 1080 Max Q in Assassin's Creed Odyssey is 43% more, than Radeon HD 6990M Crossfire.

    Full Specs

      GeForce GTX 1080 Max Q Radeon HD 6990M Crossfire
    Architecture Pascal Terascale 2
    Code name N17E-G3 Max-Q Blackcomb XTX
    Type Laptop Laptop
    Release date 30 May 2017 12 July 2011
    Pipelines 2560 2240
    Core clock speed 1101 - 1290 MHz 715 MHz
    Boost Clock 1278 - 1468 MHz
    Transistor count 7,200 million 2x1700 Million
    Manufacturing process technology 16 nm 40 nm
    Texture fill rate 234.9
    Floating-point performance 7,516 gflops
    Memory bus width 256 Bit 256 Bit
    Memory clock speed 10000 MHz 900 MHz
    Memory bandwidth 320.3 GB/s
    Shared memory - -
    G-SYNC support +
    VR Ready +
    DirectX 12 (12_1) DirectX 11, Shader 5.0
    Shader Model 6.4
    OpenGL 4.6
    OpenCL 1.2
    Vulkan 1.2.131
    CUDA 6.1
    Laptop size large large
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