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    GeForce 840M vs Radeon RX 640

    When comparing GeForce 840M and Radeon RX 640, 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 840M and Radeon RX 640 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    GeForce 840M Check Price
    Radeon RX 640 Check Price

    GeForce 840M and Radeon RX 640 are Laptop Graphics Cards

    Note: GeForce 840M and Radeon RX 640 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 RX 640 here:

    GeForce 840M Laptops
    Radeon RX 640 Laptops

    Main Specs

      GeForce 840M Radeon RX 640
    Power consumption (TDP) 33 Watt 50 Watt
    Interface PCIe 3.0 x8 PCIe 3.0 x8
    Supplementary power connectors None
    Memory type DDR3 GDDR5
    Maximum RAM amount 4 GB 4 GB
    Display Connectors No outputs 1x DVI, 1x HDMI, 1x DisplayPort
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    • Radeon RX 640 has 51% more power consumption, than GeForce 840M.
    • Both video cards are using PCIe 3.0 x8 interface connection to a motherboard.
    • GeForce 840M and Radeon RX 640 have maximum RAM of 4 GB.
    • Both cards are used in Laptops.
    • GeForce 840M is build with Maxwell architecture, and Radeon RX 640 - with Polaris.
    • Core clock speed of Radeon RX 640 is 189 MHz higher, than GeForce 840M.
    • GeForce 840M is manufactured by 28 nm process technology, and Radeon RX 640 - by 14 nm process technology.
    • Memory clock speed of Radeon RX 640 is 4000 MHz higher, than GeForce 840M.

    Game benchmarks

    high / 1080p 1−2 5−6
    ultra / 1080p 0−1 3−4
    QHD / 1440p 0−1 2−3
    low / 720p 12−14 16−18
    medium / 1080p 3−4 7−8
    The average gaming FPS of Radeon RX 640 in Assassin's Creed Odyssey is 66% more, than GeForce 840M.

    Full Specs

      GeForce 840M Radeon RX 640
    Architecture Maxwell Polaris
    Code name N15S-GT Polaris 12
    Type Laptop Laptop
    Release date 12 March 2014 12 August 2019
    Pipelines 384 640
    Core clock speed 1029 MHz 1218 MHz
    Boost Clock 1124 MHz 1218 MHz
    Transistor count 2,200 million
    Manufacturing process technology 28 nm 14 nm
    Texture fill rate 17.98 38.98
    Floating-point performance 863.2 gflops
    Memory bus width 64 Bit 64 Bit
    Memory clock speed 2000 MHz 6000 MHz
    Memory bandwidth 16.02 GB/s 112.0 GB/s
    Shared memory - -
    DirectX 12 (11_0) 12 (12_0)
    Shader Model 5.1 6.4
    OpenGL 4.5 4.6
    OpenCL 1.2 2.0
    Vulkan 1.1.126 1.2.131
    CUDA +
    FreeSync +
    Bus support PCI Express 2.0, PCI Express 3.0
    Bitcoin / BTC (SHA256) 92 Mh/s
    Laptop size medium sized large
    Optimus +
    GPU Boost 2.0
    GameWorks +
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