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    GeForce GT 645M vs Radeon RX 550

    When choosing between GeForce GT 645M and Radeon RX 550, 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 645M and Radeon RX 550.
    GeForce GT 645M Check Price
    Radeon RX 550 Check Price

    GeForce GT 645M is a Laptop Graphics Card

    Note: GeForce GT 645M 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 645M here:

    GeForce GT 645M Laptops

    Main Specs

      GeForce GT 645M Radeon RX 550
    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 550 has 56% more power consumption, than GeForce GT 645M.
    • GeForce GT 645M is connected by PCIe 3.0 x16, and Radeon RX 550 uses PCIe 3.0 x8 interface.
    • Radeon RX 550 has 2 GB more memory, than GeForce GT 645M.
    • GeForce GT 645M is used in Laptops, and Radeon RX 550 - in Desktops.
    • GeForce GT 645M is build with Kepler architecture, and Radeon RX 550 - with GCN 4.0.
    • GeForce GT 645M is manufactured by 28 nm process technology, and Radeon RX 550 - by 14 nm process technology.
    • Memory clock speed of Radeon RX 550 is 5200 MHz higher, than GeForce GT 645M.

    Game benchmarks

    high / 1080p 1−2 14−16
    ultra / 1080p 0−1 8−9
    QHD / 1440p 0−1 3−4
    low / 720p 12−14 30−33
    medium / 1080p 2−3 18−20
    The average gaming FPS of Radeon RX 550 in Assassin's Creed Odyssey is 320% more, than GeForce GT 645M.

    Full Specs

      GeForce GT 645M Radeon RX 550
    Architecture Kepler GCN 4.0
    Code name N13P-GS Lexa
    Type Laptop Desktop
    Release date 22 March 2012 20 April 2017
    Pipelines 384 512
    Core clock speed 1100 MHz
    Boost Clock 1183 MHz
    Transistor count 1,270 million 2,200 million
    Manufacturing process technology 28 nm 14 nm
    Texture fill rate 22.7 billion/sec 37.86
    Floating-point performance 544.5 gflops 1,211 gflops
    Length 145 mm
    Memory bus width 128bit 128 Bit
    Memory clock speed 1800 MHz 7000 MHz
    Memory bandwidth 112.0 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) 19 Mh/s
    Laptop size medium sized
    Optimus +
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