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    Maxwell GPU Surface Book vs Radeon HD 6990M

    In this comparison between Maxwell GPU Surface Book and Radeon HD 6990M you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people Maxwell GPU Surface Book will be the best choice, for others Radeon HD 6990M will be their preference. Study the comparison tables below and make your choice.
    Maxwell GPU Surface Book Check Price
    Radeon HD 6990M Check Price

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

    Note: Maxwell GPU Surface Book and Radeon HD 6990M 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 here:

    Maxwell GPU Surface Book Laptops
    Radeon HD 6990M Laptops

    Main Specs

      Maxwell GPU Surface Book Radeon HD 6990M
    Power consumption (TDP) 100 Watt
    Interface MXM-B (3.0)
    Supplementary power connectors None
    Memory type GDDR5 GDDR5
    Maximum RAM amount 1 GB 2 GB
    Display Connectors No outputs
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    • Radeon HD 6990M 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 - with Terascale 2.
    • Core clock speed of Maxwell GPU Surface Book is 239 MHz higher, than Radeon HD 6990M.
    • Maxwell GPU Surface Book is manufactured by 28 nm process technology, and Radeon HD 6990M - by 40 nm process technology.
    • Memory clock speed of Maxwell GPU Surface Book is 4112 MHz higher, than Radeon HD 6990M.

    Game benchmarks

    high / 1080p 8−9 14−16
    ultra / 1080p 5−6 8−9
    QHD / 1440p 0−1 3−4
    low / 720p 20−22 30−33
    medium / 1080p 10−12 16−18
    The average gaming FPS of Radeon HD 6990M in Assassin's Creed Odyssey is 63% more, than Maxwell GPU Surface Book.

    Full Specs

      Maxwell GPU Surface Book Radeon HD 6990M
    Architecture Maxwell Terascale 2
    Code name Surface Book Blackcomb XTX
    Type Laptop Laptop
    Release date 1 October 2015 12 July 2011
    Pipelines 384 1120
    Core clock speed 954 MHz 715 MHz
    Boost Clock 993 MHz
    Transistor count 1,700 million
    Manufacturing process technology 28 nm 40 nm
    Texture fill rate 40.04
    Floating-point performance 1,601.6 gflops
    Memory bus width 64 Bit 256 Bit
    Memory clock speed 5012 MHz 900 MHz
    Memory bandwidth 115.2 GB/s
    Shared memory - -
    DirectX DirectX 12 (FL 11_0), Shader 5.0 11.2 (11_0)
    Shader Model 5.0
    OpenGL 4.4
    OpenCL 1.2
    Vulkan N/A
    CUDA +
    Laptop size large
    Optimus +
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