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    GeForce 940M vs Mobility Radeon HD 3870 X2

    When comparing GeForce 940M and Mobility Radeon HD 3870 X2, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between GeForce 940M and Mobility Radeon HD 3870 X2 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    GeForce 940M Check Price
    Mobility Radeon HD 3870 X2 Check Price

    GeForce 940M and Mobility Radeon HD 3870 X2 are Laptop Graphics Cards

    Note: GeForce 940M and Mobility Radeon HD 3870 X2 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 940M or Mobility Radeon HD 3870 X2 here:

    GeForce 940M Laptops
    Mobility Radeon HD 3870 X2 Laptops

    Main Specs

      GeForce 940M Mobility Radeon HD 3870 X2
    Power consumption (TDP) 75 Watt 110 Watt
    Interface PCIe 3.0 x8 PCIe 2.0 x16
    Memory type DDR3 GDDR3
    Maximum RAM amount 4 GB 512 MB
    Display Connectors No outputs No outputs
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    • Mobility Radeon HD 3870 X2 has 46% more power consumption, than GeForce 940M.
    • GeForce 940M is connected by PCIe 3.0 x8, and Mobility Radeon HD 3870 X2 uses PCIe 2.0 x16 interface.
    • Mobility Radeon HD 3870 X2 has 508 GB more memory, than GeForce 940M.
    • Both cards are used in Laptops.
    • GeForce 940M is build with Maxwell architecture, and Mobility Radeon HD 3870 X2 - with RV6xx.
    • Core clock speed of GeForce 940M is 412 MHz higher, than Mobility Radeon HD 3870 X2.
    • GeForce 940M is manufactured by 28 nm process technology, and Mobility Radeon HD 3870 X2 - by 55 nm process technology.
    • Memory clock speed of GeForce 940M is 1150 MHz higher, than Mobility Radeon HD 3870 X2.

    Game benchmarks

    high / 1080p 2−3 6−7
    ultra / 1080p 1−2 4−5
    QHD / 1440p 0−1 0−1
    low / 720p 12−14 16−18
    medium / 1080p 4−5 8−9
    The average gaming FPS of Mobility Radeon HD 3870 X2 in Assassin's Creed Odyssey is 80% more, than GeForce 940M.

    Full Specs

      GeForce 940M Mobility Radeon HD 3870 X2
    Architecture Maxwell RV6xx
    Code name N16S-GT-S/B M88-XT CF
    Type Laptop Laptop
    Release date 12 March 2015 1 September 2008
    Pipelines 384 640
    Core clock speed 1072 MHz 660 MHz
    Boost Clock 1176 MHz
    Transistor count 1,870 million 666 million
    Manufacturing process technology 28 nm 55 nm
    Texture fill rate 28.22 10.56
    Floating-point performance 903.2 gflops 2x 422.4 gflops
    Memory bus width 64 Bit 256 Bit
    Memory clock speed 2000 MHz 850 MHz
    Memory bandwidth 14.4 GB/s 54.4 GB/s
    Shared memory - -
    DirectX 12 (11_0) 10.1 (10_1)
    Shader Model 5.1 4.1
    OpenGL 4.5 3.3
    OpenCL 1.2 N/A
    Vulkan 1.1.126 N/A
    CUDA +
    Bus support PCI Express 3.0
    Bitcoin / BTC (SHA256) 101 Mh/s
    Laptop size medium sized large
    Optimus +
    GPU Boost 2.0
    GameWorks +
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