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    GeForce 840M vs GeForce GTX 870M

    If you are going to buy a new graphics card and are choosing between GeForce 840M and GeForce GTX 870M, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce 840M stacks up against GeForce GTX 870M, check out specs charts below.
    GeForce 840M Check Price
    GeForce GTX 870M Check Price

    GeForce 840M and GeForce GTX 870M are Laptop Graphics Cards

    Note: GeForce 840M and GeForce GTX 870M 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 870M here:

    GeForce 840M Laptops
    GeForce GTX 870M Laptops

    Main Specs

      GeForce 840M GeForce GTX 870M
    Power consumption (TDP) 33 Watt 100 Watt
    Interface PCIe 3.0 x8 MXM-B (3.0)
    Supplementary power connectors None
    Memory type DDR3 GDDR5
    Maximum RAM amount 4 GB 6 GB
    Display Connectors No outputs No outputs
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    • GeForce GTX 870M has 203% more power consumption, than GeForce 840M.
    • GeForce 840M is connected by PCIe 3.0 x8, and GeForce GTX 870M uses MXM-B (3.0) interface.
    • GeForce GTX 870M has 2 GB more memory, than GeForce 840M.
    • Both cards are used in Laptops.
    • GeForce 840M is build with Maxwell architecture, and GeForce GTX 870M - with Kepler.
    • Core clock speed of GeForce 840M is 88 MHz higher, than GeForce GTX 870M.
    • GeForce 840M and GeForce GTX 870M are manufactured by 28 nm process technology.

    Game benchmarks

    high / 1080p 1−2 16−18
    ultra / 1080p 0−1 10−11
    QHD / 1440p 0−1 4−5
    low / 720p 12−14 35−40
    medium / 1080p 3−4 21−24
    The average gaming FPS of GeForce GTX 870M in Assassin's Creed Odyssey is 316% more, than GeForce 840M.

    Full Specs

      GeForce 840M GeForce GTX 870M
    Architecture Maxwell Kepler
    Code name N15S-GT N15P-GT
    Type Laptop Laptop
    Release date 12 March 2014 12 March 2014
    Pipelines 384 1344
    Core clock speed 1029 MHz 941 MHz
    Boost Clock 1124 MHz 967 MHz
    Transistor count 3,540 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 17.98 108.3
    Floating-point performance 863.2 gflops 2,599 gflops
    Memory bus width 64 Bit 192 Bit
    Memory clock speed 2000 MHz
    Memory bandwidth 16.02 GB/s 120.0 GB/s
    Shared memory - -
    DirectX 12 (11_0) 12 (11_0)
    Shader Model 5.1 5.1
    OpenGL 4.5 4.5
    OpenCL 1.2 1.1
    Vulkan 1.1.126 1.1.126
    CUDA + +
    CUDA cores 1344
    Bus support PCI Express 2.0, PCI Express 3.0 PCI Express 2.0, PCI Express 3.0
    SLI options +
    HDMI +
    Bitcoin / BTC (SHA256) 92 Mh/s 82 Mh/s
    Laptop size medium sized large
    Standard memory configuration GDDR5
    eDP 1.2 signal support Up to 3840x2160
    LVDS signal support Up to 1920x1200
    DisplayPort Multimode (DP++) support Up to 3840x2160
    HDCP content protection +
    7.1 channel HD audio on HDMI +
    TrueHD and DTS-HD audio bitstreaming +
    H.264, VC1, MPEG2 1080p video decoder +
    Optimus + +
    GPU Boost 2.0
    GameWorks +
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