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    GeForce 840M vs Radeon HD 7970M Crossfire

    Find out if it is worth upgrading your current GPU setup by comparing GeForce 840M and Radeon HD 7970M Crossfire. 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 GeForce 840M and Radeon HD 7970M Crossfire. 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.
    GeForce 840M Check Price
    Radeon HD 7970M Crossfire Check Price

    GeForce 840M and Radeon HD 7970M Crossfire are Laptop Graphics Cards

    Note: GeForce 840M and Radeon HD 7970M 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 7970M Crossfire here:

    GeForce 840M Laptops
    Radeon HD 7970M Crossfire Laptops

    Main Specs

      GeForce 840M Radeon HD 7970M Crossfire
    Power consumption (TDP) 33 Watt 200 Watt
    Interface PCIe 3.0 x8
    Memory type DDR3 GDDR5
    Maximum RAM amount 4 GB
    Display Connectors No outputs
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    • Radeon HD 7970M Crossfire has 506% more power consumption, than GeForce 840M.
    • Both cards are used in Laptops.
    • GeForce 840M is build with Maxwell architecture, and Radeon HD 7970M Crossfire - with GCN.
    • Core clock speed of GeForce 840M is 179 MHz higher, than Radeon HD 7970M Crossfire.
    • GeForce 840M and Radeon HD 7970M Crossfire are manufactured by 28 nm process technology.
    • Memory clock speed of Radeon HD 7970M Crossfire is 2800 MHz higher, than GeForce 840M.

    Game benchmarks

    high / 1080p 1−2 35−40
    ultra / 1080p 0−1 21−24
    QHD / 1440p 0−1 16−18
    4K / 2160p − 10−11
    low / 720p 12−14 60−65
    medium / 1080p 3−4 40−45
    The average gaming FPS of Radeon HD 7970M Crossfire in Assassin's Creed Odyssey is 683% more, than GeForce 840M.

    Full Specs

      GeForce 840M Radeon HD 7970M Crossfire
    Architecture Maxwell GCN
    Code name N15S-GT Wimbledon XT
    Type Laptop Laptop
    Release date 12 March 2014 1 May 2012
    Pipelines 384 2560
    Core clock speed 1029 MHz 850 MHz
    Boost Clock 1124 MHz
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 17.98
    Floating-point performance 863.2 gflops
    Memory bus width 64 Bit 2x 256 Bit
    Memory clock speed 2000 MHz 4800 MHz
    Memory bandwidth 16.02 GB/s
    Shared memory - -
    DirectX 12 (11_0) DirectX 11.1, 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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