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    GeForce GT 645M vs Radeon RX 560X

    In this comparison between GeForce GT 645M and Radeon RX 560X you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce GT 645M will be the best choice, for others Radeon RX 560X will be their preference. Study the comparison tables below and make your choice.
    GeForce GT 645M Check Price
    Radeon RX 560X

    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 560X
    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 4 GB
    Display Connectors No outputs 1x DVI, 1x HDMI, 1x DisplayPort
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    • Radeon RX 560X has 134% more power consumption, than GeForce GT 645M.
    • GeForce GT 645M is connected by PCIe 3.0 x16, and Radeon RX 560X uses PCIe 3.0 x8 interface.
    • Radeon RX 560X has 2 GB more memory, than GeForce GT 645M.
    • GeForce GT 645M is used in Laptops, and Radeon RX 560X - in Desktops.
    • GeForce GT 645M is build with Kepler architecture, and Radeon RX 560X - with GCN 4.0.
    • GeForce GT 645M is manufactured by 28 nm process technology, and Radeon RX 560X - by 14 nm process technology.
    • Memory clock speed of Radeon RX 560X is 5200 MHz higher, than GeForce GT 645M.

    Game benchmarks

    high / 1080p 1−2 18−20
    ultra / 1080p 0−1 10−11
    QHD / 1440p 0−1 4−5
    4K / 2160p − 4−5
    low / 720p 12−14 35−40
    medium / 1080p 2−3 21−24
    The average gaming FPS of Radeon RX 560X in Assassin's Creed Odyssey is 420% more, than GeForce GT 645M.

    Full Specs

      GeForce GT 645M Radeon RX 560X
    Architecture Kepler GCN 4.0
    Code name N13P-GS Polaris 21
    Type Laptop Desktop
    Release date 22 March 2012 11 April 2018
    Pipelines 384 1024
    Core clock speed 1175 MHz
    Boost Clock 1275 MHz
    Transistor count 1,270 million 3,000 million
    Manufacturing process technology 28 nm 14 nm
    Texture fill rate 22.7 billion/sec 81.60
    Floating-point performance 544.5 gflops 2,611 gflops
    Length 170 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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