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    GeForce GT 640M vs Radeon RX 550X

    If you are going to buy a new graphics card and are choosing between GeForce GT 640M and Radeon RX 550X, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce GT 640M stacks up against Radeon RX 550X, check out specs charts below.
    GeForce GT 640M Check Price
    Radeon RX 550X

    GeForce GT 640M is a Laptop Graphics Card

    Note: GeForce GT 640M 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 GT 640M here:

    GeForce GT 640M Laptops

    Main Specs

      GeForce GT 640M Radeon RX 550X
    Power consumption (TDP) 32 Watt 50 Watt
    Interface PCIe 3.0 x16 PCIe 3.0 x8
    Supplementary power connectors None
    Memory type DDR3\GDDR5 GDDR5
    Maximum RAM amount 2 GB 4 GB
    Display Connectors No outputs 1x DVI, 1x HDMI, 1x DisplayPort
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    • Radeon RX 550X has 56% more power consumption, than GeForce GT 640M.
    • GeForce GT 640M is connected by PCIe 3.0 x16, and Radeon RX 550X uses PCIe 3.0 x8 interface.
    • Radeon RX 550X has 2 GB more memory, than GeForce GT 640M.
    • GeForce GT 640M is used in Laptops, and Radeon RX 550X - in Desktops.
    • GeForce GT 640M is build with Kepler architecture, and Radeon RX 550X - with GCN 4.0.
    • GeForce GT 640M is manufactured by 28 nm process technology, and Radeon RX 550X - by 14 nm process technology.
    • Memory clock speed of Radeon RX 550X is 4200 MHz higher, than GeForce GT 640M.

    Game benchmarks

    high / 1080p 0−1 10−11
    ultra / 1080p 0−1 6−7
    QHD / 1440p 0−1 0−1
    low / 720p 10−12 21−24
    medium / 1080p 2−3 12−14
    The average gaming FPS of Radeon RX 550X in Assassin's Creed Odyssey is 183% more, than GeForce GT 640M.

    Full Specs

      GeForce GT 640M Radeon RX 550X
    Architecture Kepler GCN 4.0
    Code name N13P-GS Lexa
    Type Laptop Desktop
    Release date 22 March 2012 16 December 2018
    Pipelines 384 512
    Core clock speed 1100 MHz
    Boost Clock 645 MHz 1183 MHz
    Transistor count 1,270 million 2,200 million
    Manufacturing process technology 28 nm 14 nm
    Texture fill rate 37.86
    Floating-point performance 480.0 gflops 1,211 gflops
    Length 145 mm
    Memory bus width 128bit 128 Bit
    Memory clock speed 1800 - 4000 MHz 6000 MHz
    Memory bandwidth 96 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 +
    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
    Optimus +
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