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    Radeon HD 6990M Crossfire vs Radeon R8 M445DX

    If you are going to buy a new graphics card and are choosing between Radeon HD 6990M Crossfire and Radeon R8 M445DX, 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 HD 6990M Crossfire stacks up against Radeon R8 M445DX, check out specs charts below.
    Radeon HD 6990M Crossfire Check Price
    Radeon R8 M445DX Check Price

    Radeon HD 6990M Crossfire and Radeon R8 M445DX are Laptop Graphics Cards

    Note: Radeon HD 6990M Crossfire and Radeon R8 M445DX 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 HD 6990M Crossfire or Radeon R8 M445DX here:

    Radeon HD 6990M Crossfire Laptops
    Radeon R8 M445DX Laptops

    Main Specs

      Radeon HD 6990M Crossfire Radeon R8 M445DX
    Interface IGP
    Memory type GDDR5 DDR4/DDR3
    Maximum RAM amount 2x2 GB
    Display Connectors No outputs
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    • Both cards are used in Laptops.
    • Radeon HD 6990M Crossfire is build with Terascale 2 architecture, and Radeon R8 M445DX - with GCN.
    • Core clock speed of Radeon R8 M445DX is 5 MHz higher, than Radeon HD 6990M Crossfire.
    • Radeon HD 6990M Crossfire is manufactured by 40 nm process technology, and Radeon R8 M445DX - by 28 nm process technology.
    • Memory clock speed of Radeon R8 M445DX is 33 MHz higher, than Radeon HD 6990M Crossfire.

    Game benchmarks

    high / 1080p 35−40 0−1
    ultra / 1080p 21−24 −
    QHD / 1440p 16−18 0−1
    4K / 2160p 10−11 −
    low / 720p 60−65 1−2
    medium / 1080p 40−45 0−1
    The average gaming FPS of Radeon HD 6990M Crossfire in Assassin's Creed Odyssey is 6100% more, than Radeon R8 M445DX.

    Full Specs

      Radeon HD 6990M Crossfire Radeon R8 M445DX
    Architecture Terascale 2 GCN
    Code name Blackcomb XTX Meso
    Type Laptop Laptop
    Release date 12 July 2011 1 June 2016
    Pipelines 2240 704
    Core clock speed 715 MHz 720 / 1020 MHz
    Boost Clock 1021 MHz
    Transistor count 2x1700 Million 1,550 million
    Manufacturing process technology 40 nm 28 nm
    Texture fill rate 20.42
    Memory bus width 256 Bit 128 + 64 Bit
    Memory clock speed 900 MHz 933 / 1000 MHz
    Shared memory - -
    DirectX DirectX 11, Shader 5.0 12 (12_0)
    Shader Model 6.0
    OpenGL 4.6
    OpenCL 2.0
    Vulkan 1.2.131
    Laptop size large medium sized
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