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    GeForce 840M vs GeForce 945M

    If you are going to buy a new graphics card and are choosing between GeForce 840M and GeForce 945M, 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 945M, check out specs charts below.
    GeForce 840M Check Price
    GeForce 945M Check Price

    GeForce 840M and GeForce 945M are Laptop Graphics Cards

    Note: GeForce 840M and GeForce 945M 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 945M here:

    GeForce 840M Laptops
    GeForce 945M Laptops

    Main Specs

      GeForce 840M GeForce 945M
    Power consumption (TDP) 33 Watt 75 Watt
    Interface PCIe 3.0 x8 MXM-B (3.0)
    Supplementary power connectors None
    Memory type DDR3 DDR3
    Maximum RAM amount 4 GB 4 GB
    Display Connectors No outputs No outputs
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    • GeForce 945M has 127% more power consumption, than GeForce 840M.
    • GeForce 840M is connected by PCIe 3.0 x8, and GeForce 945M uses MXM-B (3.0) interface.
    • GeForce 840M and GeForce 945M have maximum RAM of 4 GB.
    • Both cards are used in Laptops.
    • GeForce 840M and GeForce 945M are build with Maxwell architecture.
    • Core clock speed of GeForce 840M is 101 MHz higher, than GeForce 945M.
    • GeForce 840M and GeForce 945M are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce 840M and GeForce 945M is 2000 MHz.

    Game benchmarks

    high / 1080p 1−2 10−11
    ultra / 1080p 0−1 6−7
    QHD / 1440p 0−1 1−2
    low / 720p 12−14 24−27
    medium / 1080p 3−4 12−14
    The average gaming FPS of GeForce 945M in Assassin's Creed Odyssey is 166% more, than GeForce 840M.

    Full Specs

      GeForce 840M GeForce 945M
    Architecture Maxwell Maxwell
    Code name N15S-GT GM107
    Type Laptop Laptop
    Release date 12 March 2014 12 March 2015
    Pipelines 384 512
    Core clock speed 1029 MHz 928 MHz
    Boost Clock 1124 MHz 1045 MHz
    Transistor count 1,870 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 17.98 40.80
    Floating-point performance 863.2 gflops 953.9 gflops
    Memory bus width 64 Bit 128 Bit
    Memory clock speed 2000 MHz 2000 MHz
    Memory bandwidth 16.02 GB/s 28.8 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 1.2
    Vulkan 1.1.126 1.1.126
    CUDA + +
    Bus support PCI Express 2.0, PCI Express 3.0 PCI Express 3.0
    Bitcoin / BTC (SHA256) 92 Mh/s 107 Mh/s
    Laptop size medium sized medium sized
    Optimus + +
    GPU Boost 2.0 2.0
    GameWorks + +
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