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    GeForce GT 640M vs GeForce GTX 965M

    When choosing between GeForce GT 640M and GeForce GTX 965M, 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 640M and GeForce GTX 965M.
    GeForce GT 640M Check Price
    GeForce GTX 965M Check Price

    GeForce GT 640M and GeForce GTX 965M are Laptop Graphics Cards

    Note: GeForce GT 640M and GeForce GTX 965M 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 965M here:

    GeForce GT 640M Laptops
    GeForce GTX 965M Laptops

    Main Specs

      GeForce GT 640M GeForce GTX 965M
    Power consumption (TDP) 32 Watt
    Interface PCIe 3.0 x16 MXM-B (3.0)
    Supplementary power connectors None
    Memory type DDR3\GDDR5 GDDR5
    Maximum RAM amount 2 GB 4 GB
    Display Connectors No outputs No outputs
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    • GeForce GT 640M is connected by PCIe 3.0 x16, and GeForce GTX 965M uses MXM-B (3.0) interface.
    • GeForce GTX 965M has 2 GB more memory, than GeForce GT 640M.
    • Both cards are used in Laptops.
    • GeForce GT 640M is build with Kepler architecture, and GeForce GTX 965M - with Maxwell.
    • GeForce GT 640M and GeForce GTX 965M are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce GTX 965M is 700 MHz higher, than GeForce GT 640M.

    Game benchmarks

    high / 1080p 0−1 20−22
    ultra / 1080p 0−1 12−14
    QHD / 1440p 0−1 6−7
    4K / 2160p − 5−6
    low / 720p 10−12 35−40
    medium / 1080p 2−3 24−27
    The average gaming FPS of GeForce GTX 965M in Assassin's Creed Odyssey is 416% more, than GeForce GT 640M.

    Full Specs

      GeForce GT 640M GeForce GTX 965M
    Architecture Kepler Maxwell
    Code name N13P-GS N16E-GS, N16E-GR
    Type Laptop Laptop
    Release date 22 March 2012 5 January 2015
    Pipelines 384 1024
    Core clock speed 944 MHz
    Boost Clock 645 MHz 950 / 1151 MHz
    Transistor count 1,270 million 2,940 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 73.60
    Floating-point performance 480.0 gflops 2,355 gflops
    Memory bus width 128bit 128 Bit
    Memory clock speed 1800 - 4000 MHz 2500 MHz
    Memory bandwidth 80 GB/s
    Shared memory - -
    G-SYNC support +
    DirectX 12 API 12 (12_1)
    Shader Model 5.1 6.4
    OpenGL 4.5 4.5
    OpenCL 1.1 1.1
    Vulkan 1.1.126 1.1
    CUDA + +
    CUDA cores 384 1024
    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 +
    Bitcoin / BTC (SHA256) 18 Mh/s 226 Mh/s
    Laptop size medium sized large
    DisplayPort Multimode (DP++) support +
    H.264, VC1, MPEG2 1080p video decoder +
    Optimus + +
    GameStream +
    GeForce ShadowPlay +
    GPU Boost 2.0
    GameWorks +
    BatteryBoost +
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