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    GeForce GT 640M vs Quadro K3100M

    In this comparison between GeForce GT 640M and Quadro K3100M you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce GT 640M will be the best choice, for others Quadro K3100M will be their preference. Study the comparison tables below and make your choice.
    GeForce GT 640M Check Price
    Quadro K3100M Check Price

    GeForce GT 640M and Quadro K3100M are Laptop Graphics Cards

    Note: GeForce GT 640M and Quadro K3100M 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 Quadro K3100M here:

    GeForce GT 640M Laptops
    Quadro K3100M Laptops

    Main Specs

      GeForce GT 640M Quadro K3100M
    Power consumption (TDP) 32 Watt 75 Watt
    Interface PCIe 3.0 x16 MXM-B (3.0)
    Memory type DDR3\GDDR5 GDDR5
    Maximum RAM amount 2 GB 4 GB
    Display Connectors No outputs No outputs
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    • Quadro K3100M has 134% more power consumption, than GeForce GT 640M.
    • GeForce GT 640M is connected by PCIe 3.0 x16, and Quadro K3100M uses MXM-B (3.0) interface.
    • Quadro K3100M has 2 GB more memory, than GeForce GT 640M.
    • GeForce GT 640M is used in Laptops, and Quadro K3100M - in Mobile workstations.
    • GeForce GT 640M and Quadro K3100M are build with Kepler architecture.
    • GeForce GT 640M and Quadro K3100M are manufactured by 28 nm process technology.
    • Memory clock speed of Quadro K3100M is 1400 MHz higher, than GeForce GT 640M.

    Game benchmarks

    high / 1080p 0−1 10−12
    ultra / 1080p 0−1 7−8
    QHD / 1440p 0−1 1−2
    low / 720p 10−12 24−27
    medium / 1080p 2−3 14−16
    The average gaming FPS of Quadro K3100M in Assassin's Creed Odyssey is 233% more, than GeForce GT 640M.

    Full Specs

      GeForce GT 640M Quadro K3100M
    Architecture Kepler Kepler
    Code name N13P-GS N15E-Q1-A2
    Type Laptop Mobile workstation
    Release date 22 March 2012 23 July 2013
    Pipelines 384 768
    Core clock speed 706 MHz
    Boost Clock 645 MHz
    Transistor count 1,270 million 3,540 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 45.18
    Floating-point performance 480.0 gflops 1,084 gflops
    Memory bus width 128bit 256 Bit
    Memory clock speed 1800 - 4000 MHz 3200 MHz
    Memory bandwidth 102.4 GB/s
    Shared memory - -
    DirectX 12 API 12
    Shader Model 5.1 5
    OpenGL 4.5 4.5
    OpenCL 1.1 1.2
    Vulkan 1.1.126 1.1.126
    CUDA + +
    CUDA cores 384
    Bus support PCI Express 2.0, PCI Express 3.0
    HDMI +
    HDCP +
    Maximum VGA resolution Up to 2048x1536
    3D Blu-Ray +
    Bitcoin / BTC (SHA256) 18 Mh/s 44 Mh/s
    Laptop size medium sized large
    Optimus + +
    Display Port 1.2
    3D Vision Pro +
    Mosaic +
    nView Display Management +
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