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    GeForce GT 640M vs Radeon R9 M395X

    When comparing GeForce GT 640M and Radeon R9 M395X, 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 GT 640M and Radeon R9 M395X is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    GeForce GT 640M Check Price
    Radeon R9 M395X Check Price

    GeForce GT 640M and Radeon R9 M395X are Laptop Graphics Cards

    Note: GeForce GT 640M and Radeon R9 M395X 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 M395X here:

    GeForce GT 640M Laptops
    Radeon R9 M395X Laptops

    Main Specs

      GeForce GT 640M Radeon R9 M395X
    Power consumption (TDP) 32 Watt 250 Watt
    Interface PCIe 3.0 x16 PCIe 3.0 x16
    Supplementary power connectors None
    Memory type DDR3\GDDR5 GDDR5
    Maximum RAM amount 2 GB 4 GB
    Display Connectors No outputs No outputs
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    • Radeon R9 M395X has 681% more power consumption, than GeForce GT 640M.
    • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
    • Radeon R9 M395X 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 M395X - with GCN 3.
    • GeForce GT 640M and Radeon R9 M395X are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce GT 640M is 550 MHz higher, than Radeon R9 M395X.

    Game benchmarks

    high / 1080p 0−1 24−27
    ultra / 1080p 0−1 14−16
    QHD / 1440p 0−1 9−10
    4K / 2160p − 6−7
    low / 720p 10−12 45−50
    medium / 1080p 2−3 30−35
    The average gaming FPS of Radeon R9 M395X in Assassin's Creed Odyssey is 566% more, than GeForce GT 640M.

    Full Specs

      GeForce GT 640M Radeon R9 M395X
    Architecture Kepler GCN 3
    Code name N13P-GS Amethyst XT
    Type Laptop Laptop
    Release date 22 March 2012 16 October 2014
    Pipelines 384 2048
    Core clock speed 723 MHz
    Boost Clock 645 MHz
    Transistor count 1,270 million 5,000 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 92.54
    Floating-point performance 480.0 gflops 2,961 gflops
    Memory bus width 128bit 256 Bit
    Memory clock speed 1800 - 4000 MHz 1250 MHz
    Memory bandwidth 160.0 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 413 Mh/s
    Laptop size medium sized large
    Optimus +
    Eyefinity +
    HD3D +
    PowerTune +
    DualGraphics +
    TrueAudio +
    ZeroCore +
    Switchable graphics +
    Mantle +
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