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    GeForce GT 645M vs Radeon 540X

    When comparing GeForce GT 645M and Radeon 540X, 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 645M and Radeon 540X is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    GeForce GT 645M Check Price
    Radeon 540X Check Price

    GeForce GT 645M and Radeon 540X are Laptop Graphics Cards

    Note: GeForce GT 645M and Radeon 540X 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 645M or Radeon 540X here:

    GeForce GT 645M Laptops
    Radeon 540X Laptops

    Main Specs

      GeForce GT 645M Radeon 540X
    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 2 GB
    Display Connectors No outputs 1x DVI, 1x HDMI, 1x DisplayPort
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    • Radeon 540X has 56% more power consumption, than GeForce GT 645M.
    • GeForce GT 645M is connected by PCIe 3.0 x16, and Radeon 540X uses PCIe 3.0 x8 interface.
    • GeForce GT 645M and Radeon 540X have maximum RAM of 2 GB.
    • Both cards are used in Laptops.
    • GeForce GT 645M is build with Kepler architecture, and Radeon 540X - with GCN 4.0.
    • GeForce GT 645M is manufactured by 28 nm process technology, and Radeon 540X - by 14 nm process technology.
    • Memory clock speed of Radeon 540X is 4200 MHz higher, than GeForce GT 645M.

    Game benchmarks

    high / 1080p 1−2 6−7
    ultra / 1080p 0−1 3−4
    QHD / 1440p 0−1 0−1
    low / 720p 12−14 14−16
    medium / 1080p 2−3 7−8
    The average gaming FPS of Radeon 540X in Assassin's Creed Odyssey is 80% more, than GeForce GT 645M.

    Full Specs

      GeForce GT 645M Radeon 540X
    Architecture Kepler GCN 4.0
    Code name N13P-GS Lexa
    Type Laptop Laptop
    Release date 22 March 2012 12 August 2019
    Pipelines 384 512
    Boost Clock 1219 MHz
    Transistor count 1,270 million 2,200 million
    Manufacturing process technology 28 nm 14 nm
    Texture fill rate 22.7 billion/sec 33.47
    Floating-point performance 544.5 gflops
    Memory bus width 128bit 64 Bit
    Memory clock speed 1800 MHz 6000 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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