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    GeForce GT 640 vs GeForce GTX 670MX

    When comparing GeForce GT 640 and GeForce GTX 670MX, 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 640 and GeForce GTX 670MX is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    GeForce GT 640 Check Price
    GeForce GTX 670MX Check Price

    GeForce GTX 670MX is a Laptop Graphics Card

    Note: GeForce GTX 670MX is only used in laptop graphics. It has 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 GTX 670MX here:

    GeForce GTX 670MX Laptops

    Main Specs

      GeForce GT 640 GeForce GTX 670MX
    Power consumption (TDP) 65 Watt 75 Watt
    Interface PCIe 3.0 x16 PCIe 3.0 x16
    Supplementary power connectors None
    Memory type DDR3 GDDR5
    Maximum RAM amount 2 GB 3 GB
    Display Connectors 1x DVI, 1x HDMI, 1x DisplayPort No outputs
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    • GeForce GTX 670MX has 15% more power consumption, than GeForce GT 640.
    • 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 640.
    • GeForce GT 640 is used in Desktops, and GeForce GTX 670MX - in Laptops.
    • GeForce GT 640 and GeForce GTX 670MX are build with Kepler architecture.
    • Core clock speed of GeForce GT 640 is 302 MHz higher, than GeForce GTX 670MX.
    • GeForce GT 640 and GeForce GTX 670MX are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce GT 640 is 382 MHz higher, than GeForce GTX 670MX.

    Game benchmarks

    high / 1080p 2−3 8−9
    ultra / 1080p 1−2 5−6
    QHD / 1440p 0−1 0−1
    low / 720p 14−16 20−22
    medium / 1080p 5−6 10−12
    The average gaming FPS of GeForce GTX 670MX in Assassin's Creed Odyssey is 83% more, than GeForce GT 640.

    Full Specs

      GeForce GT 640 GeForce GTX 670MX
    Architecture Kepler Kepler
    Code name GK107 N13E-GR
    Type Desktop Laptop
    Release date 5 June 2012 1 October 2012
    Pipelines 384 960
    Core clock speed 902 MHz 600 MHz
    Transistor count 1,270 million 3,540 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 28.86 48.0 billion/sec
    Floating-point performance 692.7 gflops 1,154 gflops
    Length 145 mm
    Memory bus width 128 Bit 192 Bit
    Memory clock speed 1782 MHz 1400 MHz
    Memory bandwidth 28.51 GB/s 67.2 GB/s
    Shared memory -
    DirectX 12 (11_0) 12 API
    Shader Model 5.1 5.1
    OpenGL 4.6 4.5
    OpenCL 1.2 1.1
    Vulkan 1.1.126 1.1.126
    CUDA 3.0 +
    CUDA cores 960
    Bus support PCI Express 2.0
    SLI options +
    HDMI +
    HDCP +
    Maximum VGA resolution Up to 2048x1536
    Bitcoin / BTC (SHA256) 24 Mh/s
    Laptop size large
    Optimus +
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