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    GeForce 840M vs Radeon R7 250X

    When choosing between GeForce 840M and Radeon R7 250X, 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 Radeon R7 250X.
    GeForce 840M Check Price
    Radeon R7 250X Check Price

    GeForce 840M is a Laptop Graphics Card

    Note: GeForce 840M is only used in laptop graphics. It has 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 here:

    GeForce 840M Laptops

    Main Specs

      GeForce 840M Radeon R7 250X
    Power consumption (TDP) 33 Watt 80 Watt
    Interface PCIe 3.0 x8 PCIe 3.0 x16
    Supplementary power connectors 1 x 6-pin
    Memory type DDR3 GDDR5
    Maximum RAM amount 4 GB 2 GB
    Display Connectors No outputs 1x DVI, 1x HDMI, 2x mini-DisplayPort
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    • Radeon R7 250X has 142% more power consumption, than GeForce 840M.
    • GeForce 840M is connected by PCIe 3.0 x8, and Radeon R7 250X uses PCIe 3.0 x16 interface.
    • GeForce 840M has 2 GB more memory, than Radeon R7 250X.
    • GeForce 840M is used in Laptops, and Radeon R7 250X - in Desktops.
    • GeForce 840M is build with Maxwell architecture, and Radeon R7 250X - with GCN 1.0.
    • GeForce 840M and Radeon R7 250X are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce 840M is 375 MHz higher, than Radeon R7 250X.

    Game benchmarks

    high / 1080p 1−2 10−12
    ultra / 1080p 0−1 6−7
    QHD / 1440p 0−1 1−2
    low / 720p 12−14 24−27
    medium / 1080p 3−4 14−16
    The average gaming FPS of Radeon R7 250X in Assassin's Creed Odyssey is 183% more, than GeForce 840M.

    Full Specs

      GeForce 840M Radeon R7 250X
    Architecture Maxwell GCN 1.0
    Code name N15S-GT Cape Verde
    Type Laptop Desktop
    Release date 12 March 2014 13 February 2014
    Pipelines 384 640
    Core clock speed 1029 MHz
    Boost Clock 1124 MHz 1000 MHz
    Transistor count 1,500 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 17.98 38.00
    Floating-point performance 863.2 gflops 1,216 gflops
    Length 210 mm
    Memory bus width 64 Bit 128 Bit
    Memory clock speed 2000 MHz 1625 MHz
    Memory bandwidth 16.02 GB/s 96 GB/s
    Shared memory -
    DirectX 12 (11_0)
    Shader Model 5.1 5.1
    OpenGL 4.5 4.6
    OpenCL 1.2 1.2
    Vulkan 1.1.126
    CUDA +
    FreeSync +
    Bus support PCI Express 2.0, PCI Express 3.0 PCIe 3.0
    HDMI +
    Bitcoin / BTC (SHA256) 92 Mh/s 152 Mh/s
    Laptop size medium sized
    Optimus +
    Eyefinity +
    Design reference
    CrossFire +
    DDMA audio +
    GPU Boost 2.0
    GameWorks +
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