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    Mobility Radeon HD 4850 vs Radeon HD 6990M Crossfire

    In this comparison between Mobility Radeon HD 4850 and Radeon HD 6990M Crossfire 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 Mobility Radeon HD 4850 will be the best choice, for others Radeon HD 6990M Crossfire will be their preference. Study the comparison tables below and make your choice.
    Mobility Radeon HD 4850 Check Price
    Radeon HD 6990M Crossfire Check Price

    Mobility Radeon HD 4850 and Radeon HD 6990M Crossfire are Laptop Graphics Cards

    Note: Mobility Radeon HD 4850 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 Mobility Radeon HD 4850 or Radeon HD 6990M Crossfire here:

    Mobility Radeon HD 4850 Laptops
    Radeon HD 6990M Crossfire Laptops

    Main Specs

      Mobility Radeon HD 4850 Radeon HD 6990M Crossfire
    Interface PCIe 2.0 x16
    Memory type GDDR3 GDDR5
    Maximum RAM amount 1 GB 2x2 GB
    Display Connectors No outputs
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    • Radeon HD 6990M Crossfire has 1 GB more memory, than Mobility Radeon HD 4850.
    • Both cards are used in Laptops.
    • Mobility Radeon HD 4850 is build with Terascale 1 architecture, and Radeon HD 6990M Crossfire - with Terascale 2.
    • Core clock speed of Radeon HD 6990M Crossfire is 215 MHz higher, than Mobility Radeon HD 4850.
    • Mobility Radeon HD 4850 is manufactured by 55 nm process technology, and Radeon HD 6990M Crossfire - by 40 nm process technology.
    • Memory clock speed of Radeon HD 6990M Crossfire is 50 MHz higher, than Mobility Radeon HD 4850.

    Game benchmarks

    high / 1080p 3−4 35−40
    ultra / 1080p 1−2 21−24
    QHD / 1440p 0−1 16−18
    4K / 2160p − 10−11
    low / 720p 14−16 60−65
    medium / 1080p 5−6 40−45
    The average gaming FPS of Radeon HD 6990M Crossfire in Assassin's Creed Odyssey is 583% more, than Mobility Radeon HD 4850.

    Full Specs

      Mobility Radeon HD 4850 Radeon HD 6990M Crossfire
    Architecture Terascale 1 Terascale 2
    Code name M98 Blackcomb XTX
    Type Laptop Laptop
    Release date 9 January 2009 12 July 2011
    Pipelines 800 2240
    Core clock speed 500 MHz 715 MHz
    Transistor count 956 million 2x1700 Million
    Manufacturing process technology 55 nm 40 nm
    Texture fill rate 20.00
    Floating-point performance 800.0 gflops
    Memory bus width 256 Bit 256 Bit
    Memory clock speed 850 MHz 900 MHz
    Memory bandwidth 54.4 GB/s
    Shared memory - -
    DirectX 10.1 (10_1) DirectX 11, Shader 5.0
    Shader Model 4.1
    OpenGL 3.3
    OpenCL 1.1
    Vulkan N/A
    Laptop size large large
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