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    GeForce GT 645M vs Mobility Radeon HD 4850

    In this comparison between GeForce GT 645M and Mobility Radeon HD 4850 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 Mobility Radeon HD 4850 will be their preference. Study the comparison tables below and make your choice.
    GeForce GT 645M Check Price
    Mobility Radeon HD 4850 Check Price

    GeForce GT 645M and Mobility Radeon HD 4850 are Laptop Graphics Cards

    Note: GeForce GT 645M and Mobility Radeon HD 4850 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 Mobility Radeon HD 4850 here:

    GeForce GT 645M Laptops
    Mobility Radeon HD 4850 Laptops

    Main Specs

      GeForce GT 645M Mobility Radeon HD 4850
    Power consumption (TDP) 32 Watt
    Interface PCIe 3.0 x16 PCIe 2.0 x16
    Memory type DDR3\GDDR5 GDDR3
    Maximum RAM amount 2 GB 1 GB
    Display Connectors No outputs No outputs
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    • GeForce GT 645M is connected by PCIe 3.0 x16, and Mobility Radeon HD 4850 uses PCIe 2.0 x16 interface.
    • GeForce GT 645M has 1 GB more memory, than Mobility Radeon HD 4850.
    • Both cards are used in Laptops.
    • GeForce GT 645M is build with Kepler architecture, and Mobility Radeon HD 4850 - with Terascale 1.
    • GeForce GT 645M is manufactured by 28 nm process technology, and Mobility Radeon HD 4850 - by 55 nm process technology.
    • Memory clock speed of GeForce GT 645M is 950 MHz higher, than Mobility Radeon HD 4850.

    Game benchmarks

    high / 1080p 1−2 3−4
    ultra / 1080p 0−1 1−2
    QHD / 1440p 0−1 0−1
    low / 720p 12−14 14−16
    medium / 1080p 2−3 5−6
    The average gaming FPS of Mobility Radeon HD 4850 in Assassin's Creed Odyssey is 60% more, than GeForce GT 645M.

    Full Specs

      GeForce GT 645M Mobility Radeon HD 4850
    Architecture Kepler Terascale 1
    Code name N13P-GS M98
    Type Laptop Laptop
    Release date 22 March 2012 9 January 2009
    Pipelines 384 800
    Core clock speed 500 MHz
    Transistor count 1,270 million 956 million
    Manufacturing process technology 28 nm 55 nm
    Texture fill rate 22.7 billion/sec 20.00
    Floating-point performance 544.5 gflops 800.0 gflops
    Memory bus width 128bit 256 Bit
    Memory clock speed 1800 MHz 850 MHz
    Memory bandwidth 54.4 GB/s
    Shared memory - -
    DirectX 12 API 10.1 (10_1)
    Shader Model 5.1 4.1
    OpenGL 4.5 3.3
    OpenCL 1.1 1.1
    Vulkan 1.1.126 N/A
    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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