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    Radeon HD 6990M Crossfire vs Radeon Pro Duo

    In this comparison between Radeon HD 6990M Crossfire and Radeon Pro Duo 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 Radeon HD 6990M Crossfire will be the best choice, for others Radeon Pro Duo will be their preference. Study the comparison tables below and make your choice.
    Radeon HD 6990M Crossfire Check Price
    Radeon Pro Duo Check Price

    Radeon HD 6990M Crossfire is a Laptop Graphics Card

    Note: Radeon HD 6990M Crossfire is only used in laptop graphics. It has 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 Radeon HD 6990M Crossfire here:

    Radeon HD 6990M Crossfire Laptops

    Main Specs

      Radeon HD 6990M Crossfire Radeon Pro Duo
    Power consumption (TDP) 350 Watt
    Interface PCIe 3.0 x16
    Supplementary power connectors 3x 8-pin
    Memory type GDDR5 High Bandwidth Memory (HBM)
    Maximum RAM amount 2x2 GB 8 GB
    Display Connectors 1x HDMI, 3x DisplayPort
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    • Radeon Pro Duo has 6 GB more memory, than Radeon HD 6990M Crossfire.
    • Radeon HD 6990M Crossfire is used in Laptops, and Radeon Pro Duo - in Desktops.
    • Radeon HD 6990M Crossfire is build with Terascale 2 architecture, and Radeon Pro Duo - with GCN 3.0.
    • Radeon HD 6990M Crossfire is manufactured by 40 nm process technology, and Radeon Pro Duo - by 28 nm process technology.
    • Memory clock speed of Radeon HD 6990M Crossfire is 400 MHz higher, than Radeon Pro Duo.

    Game benchmarks

    high / 1080p 35−40 50−55
    ultra / 1080p 21−24 30−35
    QHD / 1440p 16−18 27−30
    4K / 2160p 10−11 14−16
    low / 720p 60−65 75−80
    medium / 1080p 40−45 60−65
    The average gaming FPS of Radeon Pro Duo in Assassin's Creed Odyssey is 37% more, than Radeon HD 6990M Crossfire.

    Full Specs

      Radeon HD 6990M Crossfire Radeon Pro Duo
    Architecture Terascale 2 GCN 3.0
    Code name Blackcomb XTX Capsaicin
    Type Laptop Workstation
    Release date 12 July 2011 26 April 2016
    Pipelines 2240 4096
    Core clock speed 715 MHz
    Boost Clock 1000 MHz
    Transistor count 2x1700 Million 8,900 million
    Manufacturing process technology 40 nm 28 nm
    Texture fill rate 256.0
    Floating-point performance 2x 8,192 gflops
    Length 277 mm
    Memory bus width 256 Bit 4096 Bit
    Memory clock speed 900 MHz 500 MHz
    Memory bandwidth 512 GB/s
    Shared memory -
    DirectX DirectX 11, Shader 5.0
    Shader Model 6.0
    OpenGL 4.5
    OpenCL 2.0
    Vulkan +
    FreeSync +
    Bus support PCIe 3.0
    HDMI +
    Bitcoin / BTC (SHA256) 809 Mh/s
    Laptop size large
    Eyefinity +
    HD3D +
    PowerTune +
    TrueAudio +
    ZeroCore +
    Mantle +
    Design reference
    Number of Eyefinity displays 6
    DisplayPort support +
    CrossFire +
    VCE +
    Compute units 128
    AppAcceleration +
    LiquidVR +
    TressFX +
    UVD +
    Enduro +
    FRTC +
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