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    GeForce 840M vs Radeon HD 6970M Crossfire

    When comparing GeForce 840M and Radeon HD 6970M 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 GeForce 840M and Radeon HD 6970M Crossfire is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    GeForce 840M Check Price
    Radeon HD 6970M Crossfire Check Price

    GeForce 840M and Radeon HD 6970M Crossfire are Laptop Graphics Cards

    Note: GeForce 840M and Radeon HD 6970M 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 GeForce 840M or Radeon HD 6970M Crossfire here:

    GeForce 840M Laptops
    Radeon HD 6970M Crossfire Laptops

    Main Specs

      GeForce 840M Radeon HD 6970M Crossfire
    Power consumption (TDP) 33 Watt
    Interface PCIe 3.0 x8
    Memory type DDR3 GDDR5
    Maximum RAM amount 4 GB 2x2 GB
    Display Connectors No outputs
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    • GeForce 840M has 2 GB more memory, than Radeon HD 6970M Crossfire.
    • Both cards are used in Laptops.
    • GeForce 840M is build with Maxwell architecture, and Radeon HD 6970M Crossfire - with Terascale 2.
    • Core clock speed of GeForce 840M is 349 MHz higher, than Radeon HD 6970M Crossfire.
    • GeForce 840M is manufactured by 28 nm process technology, and Radeon HD 6970M Crossfire - by 40 nm process technology.
    • Memory clock speed of GeForce 840M is 1100 MHz higher, than Radeon HD 6970M Crossfire.

    Game benchmarks

    high / 1080p 1−2 21−24
    ultra / 1080p 0−1 12−14
    QHD / 1440p 0−1 7−8
    4K / 2160p − 5−6
    low / 720p 12−14 40−45
    medium / 1080p 3−4 24−27
    The average gaming FPS of Radeon HD 6970M Crossfire in Assassin's Creed Odyssey is 400% more, than GeForce 840M.

    Full Specs

      GeForce 840M Radeon HD 6970M Crossfire
    Architecture Maxwell Terascale 2
    Code name N15S-GT Blackcomb XT
    Type Laptop Laptop
    Release date 12 March 2014 6 January 2011
    Pipelines 384 1920
    Core clock speed 1029 MHz 680 MHz
    Boost Clock 1124 MHz
    Transistor count 2x1700 Million
    Manufacturing process technology 28 nm 40 nm
    Texture fill rate 17.98
    Floating-point performance 863.2 gflops
    Memory bus width 64 Bit 256 Bit
    Memory clock speed 2000 MHz 900 MHz
    Memory bandwidth 16.02 GB/s
    Shared memory - -
    DirectX 12 (11_0) DirectX 11, Shader 5.0
    Shader Model 5.1
    OpenGL 4.5
    OpenCL 1.2
    Vulkan 1.1.126
    CUDA +
    Bus support PCI Express 2.0, PCI Express 3.0
    Bitcoin / BTC (SHA256) 92 Mh/s
    Laptop size medium sized large
    Optimus +
    GPU Boost 2.0
    GameWorks +
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