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    Radeon HD 4830 vs Radeon HD 6990M Crossfire

    When comparing Radeon HD 4830 and Radeon HD 6990M Crossfire, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between Radeon HD 4830 and Radeon HD 6990M Crossfire is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    Radeon HD 4830
    Radeon HD 6990M Crossfire 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 4830 Radeon HD 6990M Crossfire
    Power consumption (TDP) 95 Watt
    Interface PCIe 2.0 x16
    Supplementary power connectors 1x 6-pin
    Memory type GDDR3 GDDR5
    Maximum RAM amount 512 MB 2x2 GB
    Display Connectors 2x DVI, 1x S-Video
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    • Radeon HD 4830 has 510 GB more memory, than Radeon HD 6990M Crossfire.
    • Radeon HD 4830 is used in Desktops, and Radeon HD 6990M Crossfire - in Laptops.
    • Radeon HD 4830 is build with TeraScale architecture, and Radeon HD 6990M Crossfire - with Terascale 2.
    • Core clock speed of Radeon HD 6990M Crossfire is 140 MHz higher, than Radeon HD 4830.
    • Radeon HD 4830 is manufactured by 55 nm process technology, and Radeon HD 6990M Crossfire - by 40 nm process technology.
    • Memory clock speed of Radeon HD 4830 is 900 MHz higher, than Radeon HD 6990M Crossfire.

    Game benchmarks

    high / 1080p 0−1 35−40
    ultra / 1080p 0−1 21−24
    QHD / 1440p 0−1 16−18
    4K / 2160p − 10−11
    low / 720p 10−12 60−65
    medium / 1080p 2−3 40−45
    The average gaming FPS of Radeon HD 6990M Crossfire in Assassin's Creed Odyssey is 766% more, than Radeon HD 4830.

    Full Specs

      Radeon HD 4830 Radeon HD 6990M Crossfire
    Architecture TeraScale Terascale 2
    Code name RV770 Blackcomb XTX
    Type Desktop Laptop
    Release date 21 October 2008 12 July 2011
    Pipelines 640 2240
    Core clock speed 575 MHz 715 MHz
    Transistor count 956 million 2x1700 Million
    Manufacturing process technology 55 nm 40 nm
    Texture fill rate 18.40
    Floating-point performance 736.0 gflops
    Length 246 mm
    Memory bus width 256 Bit 256 Bit
    Memory clock speed 1800 MHz 900 MHz
    Memory bandwidth 57.6 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
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