Subscribe to our YouTube channel ×

    GeForce GT 640M vs GeForce GTX 670MX

    If you are going to buy a new graphics card and are choosing between GeForce GT 640M and GeForce GTX 670MX, 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 stacks up against GeForce GTX 670MX, check out specs charts below.
    GeForce GT 640M Check Price
    GeForce GTX 670MX Check Price

    GeForce GT 640M and GeForce GTX 670MX are Laptop Graphics Cards

    Note: GeForce GT 640M and GeForce GTX 670MX 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 GeForce GTX 670MX here:

    GeForce GT 640M Laptops
    GeForce GTX 670MX Laptops

    Main Specs

      GeForce GT 640M GeForce GTX 670MX
    Power consumption (TDP) 32 Watt 75 Watt
    Interface PCIe 3.0 x16 PCIe 3.0 x16
    Memory type DDR3\GDDR5 GDDR5
    Maximum RAM amount 2 GB 3 GB
    Display Connectors No outputs No outputs
      Check Price Check Price
    • GeForce GTX 670MX has 134% more power consumption, than GeForce GT 640M.
    • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
    • GeForce GTX 670MX has 1 GB more memory, than GeForce GT 640M.
    • Both cards are used in Laptops.
    • GeForce GT 640M and GeForce GTX 670MX are build with Kepler architecture.
    • GeForce GT 640M and GeForce GTX 670MX are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce GT 640M is 400 MHz higher, than GeForce GTX 670MX.

    Game benchmarks

    high / 1080p 0−1 8−9
    ultra / 1080p 0−1 5−6
    QHD / 1440p 0−1 0−1
    low / 720p 10−12 20−22
    medium / 1080p 2−3 10−12
    The average gaming FPS of GeForce GTX 670MX in Assassin's Creed Odyssey is 166% more, than GeForce GT 640M.

    Full Specs

      GeForce GT 640M GeForce GTX 670MX
    Architecture Kepler Kepler
    Code name N13P-GS N13E-GR
    Type Laptop Laptop
    Release date 22 March 2012 1 October 2012
    Pipelines 384 960
    Core clock speed 600 MHz
    Boost Clock 645 MHz
    Transistor count 1,270 million 3,540 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 48.0 billion/sec
    Floating-point performance 480.0 gflops 1,154 gflops
    Memory bus width 128bit 192 Bit
    Memory clock speed 1800 - 4000 MHz 1400 MHz
    Memory bandwidth 67.2 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 1.1.126 1.1.126
    CUDA + +
    CUDA cores 384 960
    Bus support PCI Express 2.0, PCI Express 3.0 PCI Express 2.0
    SLI options +
    HDMI + +
    HDCP + +
    Maximum VGA resolution Up to 2048x1536 Up to 2048x1536
    3D Blu-Ray +
    Bitcoin / BTC (SHA256) 18 Mh/s
    Laptop size medium sized large
    Optimus + +
      Check Price Check Price

    Similar compares