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    GeForce GT 645M vs Radeon Pro Vega 20

    In this comparison between GeForce GT 645M and Radeon Pro Vega 20 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 Pro Vega 20 will be their preference. Study the comparison tables below and make your choice.
    GeForce GT 645M Check Price
    Radeon Pro Vega 20 Check Price

    GeForce GT 645M and Radeon Pro Vega 20 are Laptop Graphics Cards

    Note: GeForce GT 645M and Radeon Pro Vega 20 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 Pro Vega 20 here:

    GeForce GT 645M Laptops
    Radeon Pro Vega 20 Laptops

    Main Specs

      GeForce GT 645M Radeon Pro Vega 20
    Power consumption (TDP) 32 Watt 100 Watt
    Interface PCIe 3.0 x16 PCIe 3.0 x16
    Supplementary power connectors 1x 6-pin + 1x 8-pin
    Memory type DDR3\GDDR5 HBM2
    Maximum RAM amount 2 GB 4 GB
    Display Connectors No outputs No outputs
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    • Radeon Pro Vega 20 has 212% more power consumption, than GeForce GT 645M.
    • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
    • Radeon Pro Vega 20 has 2 GB more memory, than GeForce GT 645M.
    • GeForce GT 645M is used in Laptops, and Radeon Pro Vega 20 - in Mobile workstations.
    • GeForce GT 645M is build with Kepler architecture, and Radeon Pro Vega 20 - with Vega.
    • GeForce GT 645M is manufactured by 28 nm process technology, and Radeon Pro Vega 20 - by 14 nm process technology.
    • Memory clock speed of GeForce GT 645M is 320 MHz higher, than Radeon Pro Vega 20.

    Game benchmarks

    high / 1080p 1−2 35−40
    ultra / 1080p 0−1 21−24
    QHD / 1440p 0−1 16−18
    4K / 2160p − 10−11
    low / 720p 12−14 60−65
    medium / 1080p 2−3 40−45
    The average gaming FPS of Radeon Pro Vega 20 in Assassin's Creed Odyssey is 840% more, than GeForce GT 645M.

    Full Specs

      GeForce GT 645M Radeon Pro Vega 20
    Architecture Kepler Vega
    Code name N13P-GS Vega Mobile
    Type Laptop Mobile workstation
    Release date 22 March 2012 15 November 2018
    Pipelines 384 1280
    Core clock speed 815 MHz
    Boost Clock 1283 MHz
    Transistor count 1,270 million
    Manufacturing process technology 28 nm 14 nm
    Texture fill rate 22.7 billion/sec 102.6
    Floating-point performance 544.5 gflops
    Memory bus width 128bit 1024 Bit
    Memory clock speed 1800 MHz 1480 MHz
    Memory bandwidth 189.4 GB/s
    Shared memory - -
    DirectX 12 API 12 (12_1)
    Shader Model 5.1 6.3
    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 large
    Optimus +
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