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    Radeon HD 6990M Crossfire vs Radeon R6 M340DX

    Find out if it is worth upgrading your current GPU setup by comparing Radeon HD 6990M Crossfire and Radeon R6 M340DX. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between Radeon HD 6990M Crossfire and Radeon R6 M340DX. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.
    Radeon HD 6990M Crossfire Check Price
    Radeon R6 M340DX Check Price

    Radeon HD 6990M Crossfire and Radeon R6 M340DX are Laptop Graphics Cards

    Note: Radeon HD 6990M Crossfire and Radeon R6 M340DX 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 R6 M340DX here:

    Radeon HD 6990M Crossfire Laptops
    Radeon R6 M340DX Laptops

    Main Specs

      Radeon HD 6990M Crossfire Radeon R6 M340DX
    Interface IGP
    Memory type GDDR5 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 R6 M340DX - with GCN.
    • Radeon HD 6990M Crossfire is manufactured by 40 nm process technology, and Radeon R6 M340DX - by 28 nm process technology.

    Game benchmarks

    high / 1080p 35−40 2−3
    ultra / 1080p 21−24 2−3
    QHD / 1440p 16−18 0−1
    4K / 2160p 10−11 −
    low / 720p 60−65 10−11
    medium / 1080p 40−45 3−4
    The average gaming FPS of Radeon HD 6990M Crossfire in Assassin's Creed Odyssey is 925% more, than Radeon R6 M340DX.

    Full Specs

      Radeon HD 6990M Crossfire Radeon R6 M340DX
    Architecture Terascale 2 GCN
    Code name Blackcomb XTX Jet
    Type Laptop Laptop
    Release date 12 July 2011 3 June 2015
    Pipelines 2240 704
    Core clock speed 715 MHz
    Boost Clock 1030 MHz
    Transistor count 2x1700 Million 690 million
    Manufacturing process technology 40 nm 28 nm
    Texture fill rate 24.72
    Memory bus width 256 Bit
    Memory clock speed 900 MHz
    Shared memory - -
    DirectX DirectX 11, Shader 5.0 12 (11_1)
    Shader Model 5.1
    OpenGL 4.6
    OpenCL 1.2
    Vulkan 1.2.131
    Laptop size large medium sized
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