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    GeForce GT 640M LE vs Mobility Radeon HD 3870 X2

    If you are going to buy a new graphics card and are choosing between GeForce GT 640M LE and Mobility Radeon HD 3870 X2, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce GT 640M LE stacks up against Mobility Radeon HD 3870 X2, check out specs charts below.
    GeForce GT 640M LE Check Price
    Mobility Radeon HD 3870 X2 Check Price

    GeForce GT 640M LE and Mobility Radeon HD 3870 X2 are Laptop Graphics Cards

    Note: GeForce GT 640M LE and Mobility Radeon HD 3870 X2 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 LE or Mobility Radeon HD 3870 X2 here:

    GeForce GT 640M LE Laptops
    Mobility Radeon HD 3870 X2 Laptops

    Main Specs

      GeForce GT 640M LE Mobility Radeon HD 3870 X2
    Power consumption (TDP) 20 Watt 110 Watt
    Interface PCIe 2.0 x16 PCIe 2.0 x16
    Memory type DDR3\DDR5 GDDR3
    Maximum RAM amount 2 GB 512 MB
    Display Connectors No outputs No outputs
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    • Mobility Radeon HD 3870 X2 has 450% more power consumption, than GeForce GT 640M LE.
    • Both video cards are using PCIe 2.0 x16 interface connection to a motherboard.
    • Mobility Radeon HD 3870 X2 has 510 GB more memory, than GeForce GT 640M LE.
    • Both cards are used in Laptops.
    • GeForce GT 640M LE is build with Fermi / Kepler architecture, and Mobility Radeon HD 3870 X2 - with RV6xx.
    • GeForce GT 640M LE is manufactured by 28 nm process technology, and Mobility Radeon HD 3870 X2 - by 55 nm process technology.
    • Memory clock speed of GeForce GT 640M LE is 950 MHz higher, than Mobility Radeon HD 3870 X2.

    Game benchmarks

    high / 1080p 0−1 6−7
    ultra / 1080p − 4−5
    QHD / 1440p 0−1 0−1
    low / 720p 1−2 16−18
    medium / 1080p 0−1 8−9
    The average gaming FPS of Mobility Radeon HD 3870 X2 in Assassin's Creed Odyssey is 1600% more, than GeForce GT 640M LE.

    Full Specs

      GeForce GT 640M LE Mobility Radeon HD 3870 X2
    Architecture Fermi / Kepler RV6xx
    Code name N13P-LP M88-XT CF
    Type Laptop Laptop
    Release date 22 March 2012 1 September 2008
    Pipelines 384 640
    Core clock speed 660 MHz
    Transistor count 585 million 666 million
    Manufacturing process technology 28 nm 55 nm
    Texture fill rate 10.56
    Floating-point performance 384.0 gflops 2x 422.4 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 N/A
    Vulkan N/A N/A
    CUDA +
    CUDA cores Up to 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) 14 Mh/s
    Laptop size medium sized large
    Optimus +
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