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    GeForce 840M vs GeForce GTX 670MX SLI

    When choosing between GeForce 840M and GeForce GTX 670MX SLI, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce 840M and GeForce GTX 670MX SLI.
    GeForce 840M Check Price
    GeForce GTX 670MX SLI Check Price

    GeForce 840M and GeForce GTX 670MX SLI are Laptop Graphics Cards

    Note: GeForce 840M and GeForce GTX 670MX SLI 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 GeForce GTX 670MX SLI here:

    GeForce 840M Laptops
    GeForce GTX 670MX SLI Laptops

    Main Specs

      GeForce 840M GeForce GTX 670MX SLI
    Power consumption (TDP) 33 Watt 150 Watt
    Interface PCIe 3.0 x8
    Memory type DDR3 GDDR5
    Maximum RAM amount 4 GB
    Display Connectors No outputs
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    • GeForce GTX 670MX SLI has 354% more power consumption, than GeForce 840M.
    • Both cards are used in Laptops.
    • GeForce 840M is build with Maxwell architecture, and GeForce GTX 670MX SLI - with Kepler.
    • Core clock speed of GeForce 840M is 429 MHz higher, than GeForce GTX 670MX SLI.
    • GeForce 840M and GeForce GTX 670MX SLI are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce GTX 670MX SLI is 800 MHz higher, than GeForce 840M.

    Game benchmarks

    high / 1080p 1−2 21−24
    ultra / 1080p 0−1 14−16
    QHD / 1440p 0−1 8−9
    4K / 2160p − 5−6
    low / 720p 12−14 40−45
    medium / 1080p 3−4 27−30
    The average gaming FPS of GeForce GTX 670MX SLI in Assassin's Creed Odyssey is 416% more, than GeForce 840M.

    Full Specs

      GeForce 840M GeForce GTX 670MX SLI
    Architecture Maxwell Kepler
    Code name N15S-GT N13E-GR
    Type Laptop Laptop
    Release date 12 March 2014 1 October 2012
    Pipelines 384 1920
    Core clock speed 1029 MHz 600 MHz
    Boost Clock 1124 MHz
    Transistor count 5080 Million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 17.98
    Floating-point performance 863.2 gflops
    Memory bus width 64 Bit 2x 192 Bit
    Memory clock speed 2000 MHz 2800 MHz
    Memory bandwidth 16.02 GB/s
    Shared memory - -
    DirectX 12 (11_0) DirectX 11, Shader 5.1
    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
    SLI options +
    Bitcoin / BTC (SHA256) 92 Mh/s
    Laptop size medium sized large
    Optimus + +
    GPU Boost 2.0
    GameWorks +
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