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    GeForce GT 640M LE vs GeForce GTX 680MX

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

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

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

    GeForce GT 640M LE Laptops
    GeForce GTX 680MX Laptops

    Main Specs

      GeForce GT 640M LE GeForce GTX 680MX
    Power consumption (TDP) 20 Watt 122 Watt
    Interface PCIe 2.0 x16
    Memory type DDR3\DDR5 GDDR5
    Maximum RAM amount 2 GB 2 GB
    Display Connectors No outputs
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    • GeForce GTX 680MX has 510% more power consumption, than GeForce GT 640M LE.
    • GeForce GT 640M LE and GeForce GTX 680MX 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 680MX - with Kepler.
    • GeForce GT 640M LE and GeForce GTX 680MX are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce GTX 680MX is 700 MHz higher, than GeForce GT 640M LE.

    Game benchmarks

    high / 1080p 0−1 21−24
    ultra / 1080p − 12−14
    QHD / 1440p 0−1 7−8
    4K / 2160p − 5−6
    low / 720p 1−2 40−45
    medium / 1080p 0−1 27−30
    The average gaming FPS of GeForce GTX 680MX in Assassin's Creed Odyssey is 4100% more, than GeForce GT 640M LE.

    Full Specs

      GeForce GT 640M LE GeForce GTX 680MX
    Architecture Fermi / Kepler Kepler
    Code name N13P-LP
    Type Laptop Laptop
    Release date 22 March 2012 23 October 2012
    Pipelines 384 1536
    Core clock speed 720 MHz
    Transistor count 585 million 3540 Million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 92.2 billion/sec
    Floating-point performance 384.0 gflops
    Memory bus width 128bit 256 Bit
    Memory clock speed 1800 - 4000 MHz 2500 MHz
    Memory bandwidth 160 GB/s
    Shared memory - -
    DirectX 12 API 12 API
    Shader Model 5.1
    OpenGL 4.5 4.5
    OpenCL 1.1 1.1
    Vulkan N/A
    CUDA + +
    CUDA cores Up to 384 1536
    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 +
    3D Vision +
    Bitcoin / BTC (SHA256) 14 Mh/s 57 Mh/s
    Laptop size medium sized large
    Optimus + +
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