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    GeForce GT 640M LE vs GeForce GTX 680M SLI

    When comparing GeForce GT 640M LE and GeForce GTX 680M SLI, 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 640M LE and GeForce GTX 680M SLI is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    GeForce GT 640M LE Check Price
    GeForce GTX 680M SLI Check Price

    GeForce GT 640M LE and GeForce GTX 680M SLI are Laptop Graphics Cards

    Note: GeForce GT 640M LE and GeForce GTX 680M SLI 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 GeForce GTX 680M SLI here:

    GeForce GT 640M LE Laptops
    GeForce GTX 680M SLI Laptops

    Main Specs

      GeForce GT 640M LE GeForce GTX 680M SLI
    Power consumption (TDP) 20 Watt
    Interface PCIe 2.0 x16
    Memory type DDR3\DDR5 GDDR5
    Maximum RAM amount 2 GB 2x 4 GB
    Display Connectors No outputs
      Check Price Check Price
    • GeForce GT 640M LE and GeForce GTX 680M SLI have maximum RAM of 2 GB.
    • Both cards are used in Laptops.
    • GeForce GT 640M LE is build with Fermi / Kepler architecture, and GeForce GTX 680M SLI - with Kepler.
    • GeForce GT 640M LE and GeForce GTX 680M SLI are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce GTX 680M SLI is 1800 MHz higher, than GeForce GT 640M LE.

    Game benchmarks

    high / 1080p 0−1 35−40
    ultra / 1080p − 21−24
    QHD / 1440p 0−1 16−18
    4K / 2160p − 10−11
    low / 720p 1−2 60−65
    medium / 1080p 0−1 40−45
    The average gaming FPS of GeForce GTX 680M SLI in Assassin's Creed Odyssey is 6100% more, than GeForce GT 640M LE.

    Full Specs

      GeForce GT 640M LE GeForce GTX 680M SLI
    Architecture Fermi / Kepler Kepler
    Code name N13P-LP N13E-GTX
    Type Laptop Laptop
    Release date 22 March 2012 4 June 2012
    Pipelines 384 2688
    Core clock speed 720 MHz
    Transistor count 585 million
    Manufacturing process technology 28 nm 28 nm
    Floating-point performance 384.0 gflops
    Memory bus width 128bit 2x 256 Bit
    Memory clock speed 1800 - 4000 MHz 3600 MHz
    Shared memory - -
    DirectX 12 API DirectX 11, Shader 5.0
    Shader Model 5.1
    OpenGL 4.5
    OpenCL 1.1
    Vulkan N/A
    CUDA + +
    CUDA cores Up to 384
    Bus support PCI Express 2.0, PCI Express 3.0
    SLI options +
    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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