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    GeForce GT 640M LE vs GeForce GTX 680M

    If you are going to buy a new graphics card and are choosing between GeForce GT 640M LE and GeForce GTX 680M, 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 GeForce GTX 680M, check out specs charts below.
    GeForce GT 640M LE Check Price
    GeForce GTX 680M Check Price

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

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

    GeForce GT 640M LE Laptops
    GeForce GTX 680M Laptops

    Main Specs

      GeForce GT 640M LE GeForce GTX 680M
    Power consumption (TDP) 20 Watt 100 Watt
    Interface PCIe 2.0 x16 MXM-B (3.0)
    Supplementary power connectors None
    Memory type DDR3\DDR5 GDDR5
    Maximum RAM amount 2 GB 4 GB
    Display Connectors No outputs No outputs
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    • GeForce GTX 680M has 400% more power consumption, than GeForce GT 640M LE.
    • GeForce GT 640M LE is connected by PCIe 2.0 x16, and GeForce GTX 680M uses MXM-B (3.0) interface.
    • GeForce GTX 680M has 2 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 GeForce GTX 680M - with Kepler.
    • GeForce GT 640M LE and GeForce GTX 680M are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce GT 640M LE and GeForce GTX 680M is 1800 MHz.

    Game benchmarks

    high / 1080p 0−1 16−18
    ultra / 1080p − 9−10
    QHD / 1440p 0−1 4−5
    4K / 2160p − 4−5
    low / 720p 1−2 30−35
    medium / 1080p 0−1 20−22
    The average gaming FPS of GeForce GTX 680M in Assassin's Creed Odyssey is 3100% more, than GeForce GT 640M LE.

    Full Specs

      GeForce GT 640M LE GeForce GTX 680M
    Architecture Fermi / Kepler Kepler
    Code name N13P-LP N13E-GTX
    Type Laptop Laptop
    Release date 22 March 2012 4 June 2012
    Pipelines 384 1344
    Core clock speed 720 MHz
    Boost Clock 758 MHz
    Transistor count 585 million 3,540 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 80.6 billion/sec
    Floating-point performance 384.0 gflops 2,038 gflops
    Memory bus width 128bit 256 Bit
    Memory clock speed 1800 - 4000 MHz 1800 MHz
    Memory bandwidth 115.2 GB/s
    Shared memory - -
    DirectX 12 API 12 API
    Shader Model 5.1 5.1
    OpenGL 4.5 4.5
    OpenCL 1.1 1.1
    Vulkan N/A 1.1.126
    CUDA + +
    CUDA cores Up to 384 1344
    Bus support PCI Express 2.0, PCI Express 3.0 PCI Express 3.0
    SLI options +
    HDMI +
    HDCP +
    Maximum VGA resolution Up to 2048x1536
    3D Blu-Ray +
    Bitcoin / BTC (SHA256) 14 Mh/s 100 Mh/s
    Laptop size medium sized large
    Optimus + +
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