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    GeForce GT 640M vs Radeon R9 M385X

    When choosing between GeForce GT 640M and Radeon R9 M385X, 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 GT 640M and Radeon R9 M385X.
    GeForce GT 640M Check Price
    Radeon R9 M385X Check Price

    GeForce GT 640M and Radeon R9 M385X are Laptop Graphics Cards

    Note: GeForce GT 640M and Radeon R9 M385X 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 GT 640M or Radeon R9 M385X here:

    GeForce GT 640M Laptops
    Radeon R9 M385X Laptops

    Main Specs

      GeForce GT 640M Radeon R9 M385X
    Power consumption (TDP) 32 Watt
    Interface PCIe 3.0 x16 PCIe 3.0 x16
    Memory type DDR3\GDDR5 GDDR5
    Maximum RAM amount 2 GB 4 GB
    Display Connectors No outputs No outputs
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    • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
    • Radeon R9 M385X has 2 GB more memory, than GeForce GT 640M.
    • Both cards are used in Laptops.
    • GeForce GT 640M is build with Kepler architecture, and Radeon R9 M385X - with GCN.
    • GeForce GT 640M and Radeon R9 M385X are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce GT 640M is 300 MHz higher, than Radeon R9 M385X.

    Game benchmarks

    high / 1080p 0−1 8−9
    ultra / 1080p 0−1 5−6
    QHD / 1440p 0−1 0−1
    low / 720p 10−12 18−20
    medium / 1080p 2−3 10−11
    The average gaming FPS of Radeon R9 M385X in Assassin's Creed Odyssey is 133% more, than GeForce GT 640M.

    Full Specs

      GeForce GT 640M Radeon R9 M385X
    Architecture Kepler GCN
    Code name N13P-GS Strato-XT-M3
    Type Laptop Laptop
    Release date 22 March 2012 16 June 2015
    Pipelines 384 896
    Core clock speed 1100 MHz
    Boost Clock 645 MHz 1100 MHz
    Transistor count 1,270 million 2,080 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 61.60
    Floating-point performance 480.0 gflops 1,971 gflops
    Memory bus width 128bit 128 Bit
    Memory clock speed 1800 - 4000 MHz 1500 MHz
    Memory bandwidth 76.8 GB/s
    Shared memory - -
    DirectX 12 API
    Shader Model 5.1 6.3
    OpenGL 4.5 4.4
    OpenCL 1.1 Not Listed
    Vulkan 1.1.126
    CUDA +
    FreeSync +
    CUDA cores 384
    Bus support PCI Express 2.0, PCI Express 3.0 PCIe 3.0
    HDMI +
    HDCP +
    Maximum VGA resolution Up to 2048x1536
    3D Blu-Ray +
    Bitcoin / BTC (SHA256) 18 Mh/s
    Laptop size medium sized large
    Optimus +
    Eyefinity +
    HD3D +
    PowerTune +
    DualGraphics +
    ZeroCore +
    Switchable graphics +
    Mantle +
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