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    GeForce GT 640M vs Radeon Pro 555X

    When comparing GeForce GT 640M and Radeon Pro 555X, 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 Pro 555X 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 Pro 555X Check Price

    GeForce GT 640M and Radeon Pro 555X are Laptop Graphics Cards

    Note: GeForce GT 640M and Radeon Pro 555X 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 Pro 555X here:

    GeForce GT 640M Laptops
    Radeon Pro 555X Laptops

    Main Specs

      GeForce GT 640M Radeon Pro 555X
    Power consumption (TDP) 32 Watt 75 Watt
    Interface PCIe 3.0 x16 PCIe 3.0 x8
    Supplementary power connectors None
    Memory type DDR3\GDDR5 GDDR5
    Maximum RAM amount 2 GB 2 GB
    Display Connectors No outputs No outputs
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    • Radeon Pro 555X has 134% more power consumption, than GeForce GT 640M.
    • GeForce GT 640M is connected by PCIe 3.0 x16, and Radeon Pro 555X uses PCIe 3.0 x8 interface.
    • GeForce GT 640M and Radeon Pro 555X have maximum RAM of 2 GB.
    • GeForce GT 640M is used in Laptops, and Radeon Pro 555X - in Mobile workstations.
    • GeForce GT 640M is build with Kepler architecture, and Radeon Pro 555X - with Polaris.
    • GeForce GT 640M is manufactured by 28 nm process technology, and Radeon Pro 555X - by 14 nm process technology.
    • Memory clock speed of Radeon Pro 555X is 3280 MHz higher, than GeForce GT 640M.

    Game benchmarks

    high / 1080p 0−1 16−18
    ultra / 1080p 0−1 10−11
    QHD / 1440p 0−1 4−5
    4K / 2160p − 4−5
    low / 720p 10−12 30−35
    medium / 1080p 2−3 21−24
    The average gaming FPS of Radeon Pro 555X in Assassin's Creed Odyssey is 350% more, than GeForce GT 640M.

    Full Specs

      GeForce GT 640M Radeon Pro 555X
    Architecture Kepler Polaris
    Code name N13P-GS Polaris 21
    Type Laptop Mobile workstation
    Release date 22 March 2012 5 June 2017
    Pipelines 384 768
    Core clock speed 855 MHz
    Boost Clock 645 MHz
    Transistor count 1,270 million 3,000 million
    Manufacturing process technology 28 nm 14 nm
    Texture fill rate 43.54
    Floating-point performance 480.0 gflops
    Memory bus width 128bit 128 Bit
    Memory clock speed 1800 - 4000 MHz 5080 MHz
    Memory bandwidth 81.6 GB/s
    Shared memory - -
    DirectX 12 API 12 (12_0)
    Shader Model 5.1 6.4
    OpenGL 4.5 4.6
    OpenCL 1.1 2.0
    Vulkan 1.1.126 1.2.131
    CUDA +
    FreeSync +
    CUDA cores 384
    Bus support PCI Express 2.0, PCI Express 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 +
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