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    GeForce 840M vs Radeon HD 7660G plus HD 7670M Dual Graphics

    In this comparison between GeForce 840M and Radeon HD 7660G plus HD 7670M Dual Graphics you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce 840M will be the best choice, for others Radeon HD 7660G plus HD 7670M Dual Graphics will be their preference. Study the comparison tables below and make your choice.
    GeForce 840M Check Price
    Radeon HD 7660G plus HD 7670M Dual Graphics Check Price

    GeForce 840M and Radeon HD 7660G plus HD 7670M Dual Graphics are Laptop Graphics Cards

    Note: GeForce 840M and Radeon HD 7660G plus HD 7670M Dual Graphics 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 7660G plus HD 7670M Dual Graphics here:

    GeForce 840M Laptops
    Radeon HD 7660G plus HD 7670M Dual Graphics Laptops

    Main Specs

      GeForce 840M Radeon HD 7660G plus HD 7670M Dual Graphics
    Power consumption (TDP) 33 Watt
    Interface PCIe 3.0 x8
    Memory type DDR3 DDR3,GDDR5
    Maximum RAM amount 4 GB
    Display Connectors No outputs
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    • Both cards are used in Laptops.
    • GeForce 840M is build with Maxwell architecture, and Radeon HD 7660G plus HD 7670M Dual Graphics - with Terascale 2.
    • Core clock speed of GeForce 840M is 344 MHz higher, than Radeon HD 7660G plus HD 7670M Dual Graphics.
    • GeForce 840M is manufactured by 28 nm process technology, and Radeon HD 7660G plus HD 7670M Dual Graphics - by 40 / 32 nm process technology.
    • Memory clock speed of GeForce 840M is 200 MHz higher, than Radeon HD 7660G plus HD 7670M Dual Graphics.

    Game benchmarks

    high / 1080p 1−2 1−2
    ultra / 1080p 0−1 0−1
    QHD / 1440p 0−1 0−1
    low / 720p 12−14 12−14
    medium / 1080p 3−4 3−4
    GeForce 840M and Radeon HD 7660G plus HD 7670M Dual Graphics have the same average FPS in Assassin's Creed Odyssey.

    Full Specs

      GeForce 840M Radeon HD 7660G plus HD 7670M Dual Graphics
    Architecture Maxwell Terascale 2
    Code name N15S-GT
    Type Laptop Laptop
    Release date 12 March 2014 15 May 2012
    Pipelines 384 862
    Core clock speed 1029 MHz 685 / 600 MHz
    Boost Clock 1124 MHz
    Manufacturing process technology 28 nm 40 / 32 nm
    Texture fill rate 17.98
    Floating-point performance 863.2 gflops
    Memory bus width 64 Bit 128 Bit
    Memory clock speed 2000 MHz 1800 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 medium sized
    Optimus +
    GPU Boost 2.0
    GameWorks +
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