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    GeForce GT 640M vs Mobility Radeon HD 4850

    Find out if it is worth upgrading your current GPU setup by comparing GeForce GT 640M and Mobility Radeon HD 4850. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between GeForce GT 640M and Mobility Radeon HD 4850. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.
    GeForce GT 640M Check Price
    Mobility Radeon HD 4850 Check Price

    GeForce GT 640M and Mobility Radeon HD 4850 are Laptop Graphics Cards

    Note: GeForce GT 640M 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 640M or Mobility Radeon HD 4850 here:

    GeForce GT 640M Laptops
    Mobility Radeon HD 4850 Laptops

    Main Specs

      GeForce GT 640M 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 640M is connected by PCIe 3.0 x16, and Mobility Radeon HD 4850 uses PCIe 2.0 x16 interface.
    • GeForce GT 640M has 1 GB more memory, than Mobility Radeon HD 4850.
    • Both cards are used in Laptops.
    • GeForce GT 640M is build with Kepler architecture, and Mobility Radeon HD 4850 - with Terascale 1.
    • GeForce GT 640M is manufactured by 28 nm process technology, and Mobility Radeon HD 4850 - by 55 nm process technology.
    • Memory clock speed of GeForce GT 640M is 950 MHz higher, than Mobility Radeon HD 4850.

    Game benchmarks

    high / 1080p 0−1 3−4
    ultra / 1080p 0−1 1−2
    QHD / 1440p 0−1 0−1
    low / 720p 10−12 14−16
    medium / 1080p 2−3 5−6
    The average gaming FPS of Mobility Radeon HD 4850 in Assassin's Creed Odyssey is 66% more, than GeForce GT 640M.

    Full Specs

      GeForce GT 640M 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
    Boost Clock 645 MHz
    Transistor count 1,270 million 956 million
    Manufacturing process technology 28 nm 55 nm
    Texture fill rate 20.00
    Floating-point performance 480.0 gflops 800.0 gflops
    Memory bus width 128bit 256 Bit
    Memory clock speed 1800 - 4000 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) 18 Mh/s
    Laptop size medium sized large
    Optimus +
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