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    GeForce GT 640 vs GeForce GTX 675M

    When choosing between GeForce GT 640 and GeForce GTX 675M, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce GT 640 and GeForce GTX 675M.
    GeForce GT 640 Check Price
    GeForce GTX 675M Check Price

    GeForce GTX 675M is a Laptop Graphics Card

    Note: GeForce GTX 675M 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 675M here:

    GeForce GTX 675M Laptops

    Main Specs

      GeForce GT 640 GeForce GTX 675M
    Power consumption (TDP) 65 Watt 100 Watt
    Interface PCIe 3.0 x16 MXM-B (3.0)
    Supplementary power connectors None
    Memory type DDR3 GDDR5
    Maximum RAM amount 2 GB 2 GB
    Display Connectors 1x DVI, 1x HDMI, 1x DisplayPort No outputs
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    • GeForce GTX 675M has 53% more power consumption, than GeForce GT 640.
    • GeForce GT 640 is connected by PCIe 3.0 x16, and GeForce GTX 675M uses MXM-B (3.0) interface.
    • GeForce GT 640 and GeForce GTX 675M have maximum RAM of 2 GB.
    • GeForce GT 640 is used in Desktops, and GeForce GTX 675M - in Laptops.
    • GeForce GT 640 is build with Kepler architecture, and GeForce GTX 675M - with Fermi.
    • Core clock speed of GeForce GT 640 is 282 MHz higher, than GeForce GTX 675M.
    • GeForce GT 640 is manufactured by 28 nm process technology, and GeForce GTX 675M - by 40 nm process technology.
    • Memory clock speed of GeForce GT 640 is 282 MHz higher, than GeForce GTX 675M.

    Game benchmarks

    high / 1080p 2−3 10−11
    ultra / 1080p 1−2 6−7
    QHD / 1440p 0−1 0−1
    low / 720p 14−16 21−24
    medium / 1080p 5−6 12−14
    The average gaming FPS of GeForce GTX 675M in Assassin's Creed Odyssey is 116% more, than GeForce GT 640.

    Full Specs

      GeForce GT 640 GeForce GTX 675M
    Architecture Kepler Fermi
    Code name GK107 N13E-GS1
    Type Desktop Laptop
    Release date 5 June 2012 22 March 2012
    Pipelines 384 384
    Core clock speed 902 MHz 620 MHz
    Transistor count 1,270 million 1,950 million
    Manufacturing process technology 28 nm 40 nm
    Texture fill rate 28.86 39.7 billion/sec
    Floating-point performance 692.7 gflops 952.3 gflops
    Length 145 mm
    Memory bus width 128 Bit 256bit
    Memory clock speed 1782 MHz 1500 MHz
    Memory bandwidth 28.51 GB/s 96.0 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 N/A
    CUDA 3.0 +
    CUDA cores 384
    Bus support PCI Express 2.0
    SLI options +
    HDMI +
    HDCP +
    Maximum VGA resolution Up to 2048x1536
    Bitcoin / BTC (SHA256) 24 Mh/s 59 Mh/s
    Laptop size large
    Optimus +
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