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    Radeon 520 vs Radeon HD 6990M Crossfire

    If you are going to buy a new graphics card and are choosing between Radeon 520 and Radeon HD 6990M Crossfire, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the Radeon 520 stacks up against Radeon HD 6990M Crossfire, check out specs charts below.
    Radeon 520 Check Price
    Radeon HD 6990M Crossfire Check Price

    Radeon 520 and Radeon HD 6990M Crossfire are Laptop Graphics Cards

    Note: Radeon 520 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 Radeon 520 or Radeon HD 6990M Crossfire here:

    Radeon 520 Laptops
    Radeon HD 6990M Crossfire Laptops

    Main Specs

      Radeon 520 Radeon HD 6990M Crossfire
    Power consumption (TDP) 50 Watt
    Interface PCIe 3.0 x8
    Supplementary power connectors None
    Memory type DDR3, GDDR5 GDDR5
    Maximum RAM amount 2 GB 2x2 GB
    Display Connectors 1x DVI, 1x HDMI, 1x VGA
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    • Radeon 520 and Radeon HD 6990M Crossfire have maximum RAM of 2 GB.
    • Both cards are used in Laptops.
    • Radeon 520 is build with GCN 1.0 architecture, and Radeon HD 6990M Crossfire - with Terascale 2.
    • Core clock speed of Radeon 520 is 315 MHz higher, than Radeon HD 6990M Crossfire.
    • Radeon 520 is manufactured by 28 nm process technology, and Radeon HD 6990M Crossfire - by 40 nm process technology.
    • Memory clock speed of Radeon 520 is 1350 MHz higher, than Radeon HD 6990M Crossfire.

    Game benchmarks

    high / 1080p 0−1 35−40
    ultra / 1080p − 21−24
    QHD / 1440p 0−1 16−18
    4K / 2160p − 10−11
    low / 720p 1−2 60−65
    medium / 1080p 0−1 40−45
    The average gaming FPS of Radeon HD 6990M Crossfire in Assassin's Creed Odyssey is 6100% more, than Radeon 520.

    Full Specs

      Radeon 520 Radeon HD 6990M Crossfire
    Architecture GCN 1.0 Terascale 2
    Code name Oland Blackcomb XTX
    Type Laptop Laptop
    Release date 21 March 2017 12 July 2011
    Pipelines 320 2240
    Core clock speed 1030 MHz 715 MHz
    Transistor count 1,040 million 2x1700 Million
    Manufacturing process technology 28 nm 40 nm
    Texture fill rate 20.60
    Floating-point performance 659.2 gflops
    Memory bus width 64 Bit 256 Bit
    Memory clock speed 2250 MHz 900 MHz
    Memory bandwidth 16 GB/s
    Shared memory - -
    DirectX 12.0 DirectX 11, Shader 5.0
    Shader Model 5.0
    OpenGL 4.6
    OpenCL 1.2
    Vulkan +
    Laptop size large
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