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    Maxwell GPU Surface Book vs Radeon HD 6990M Crossfire

    When choosing between Maxwell GPU Surface Book and Radeon HD 6990M Crossfire, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between Maxwell GPU Surface Book and Radeon HD 6990M Crossfire.
    Maxwell GPU Surface Book Check Price
    Radeon HD 6990M Crossfire Check Price

    Maxwell GPU Surface Book and Radeon HD 6990M Crossfire are Laptop Graphics Cards

    Note: Maxwell GPU Surface Book 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 Maxwell GPU Surface Book or Radeon HD 6990M Crossfire here:

    Maxwell GPU Surface Book Laptops
    Radeon HD 6990M Crossfire Laptops

    Main Specs

      Maxwell GPU Surface Book Radeon HD 6990M Crossfire
    Memory type GDDR5 GDDR5
    Maximum RAM amount 1 GB 2x2 GB
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    • Radeon HD 6990M Crossfire has 1 GB more memory, than Maxwell GPU Surface Book.
    • Both cards are used in Laptops.
    • Maxwell GPU Surface Book is build with Maxwell architecture, and Radeon HD 6990M Crossfire - with Terascale 2.
    • Core clock speed of Maxwell GPU Surface Book is 239 MHz higher, than Radeon HD 6990M Crossfire.
    • Maxwell GPU Surface Book is manufactured by 28 nm process technology, and Radeon HD 6990M Crossfire - by 40 nm process technology.
    • Memory clock speed of Maxwell GPU Surface Book is 4112 MHz higher, than Radeon HD 6990M Crossfire.

    Game benchmarks

    high / 1080p 8−9 35−40
    ultra / 1080p 5−6 21−24
    QHD / 1440p 0−1 16−18
    4K / 2160p − 10−11
    low / 720p 20−22 60−65
    medium / 1080p 10−12 40−45
    The average gaming FPS of Radeon HD 6990M Crossfire in Assassin's Creed Odyssey is 272% more, than Maxwell GPU Surface Book.

    Full Specs

      Maxwell GPU Surface Book Radeon HD 6990M Crossfire
    Architecture Maxwell Terascale 2
    Code name Surface Book Blackcomb XTX
    Type Laptop Laptop
    Release date 1 October 2015 12 July 2011
    Pipelines 384 2240
    Core clock speed 954 MHz 715 MHz
    Boost Clock 993 MHz
    Transistor count 2x1700 Million
    Manufacturing process technology 28 nm 40 nm
    Memory bus width 64 Bit 256 Bit
    Memory clock speed 5012 MHz 900 MHz
    Shared memory - -
    DirectX DirectX 12 (FL 11_0), Shader 5.0 DirectX 11, Shader 5.0
    CUDA +
    Laptop size large
    Optimus +
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