Subscribe to our YouTube channel ×

    GeForce GT 640M vs GeForce GTX 770M

    When comparing GeForce GT 640M and GeForce GTX 770M, 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 640M and GeForce GTX 770M is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    GeForce GT 640M Check Price
    GeForce GTX 770M Check Price

    GeForce GT 640M and GeForce GTX 770M are Laptop Graphics Cards

    Note: GeForce GT 640M and GeForce GTX 770M 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 770M here:

    GeForce GT 640M Laptops
    GeForce GTX 770M Laptops

    Main Specs

      GeForce GT 640M GeForce GTX 770M
    Power consumption (TDP) 32 Watt 75 Watt
    Interface PCIe 3.0 x16 MXM-B (3.0)
    Supplementary power connectors None
    Memory type DDR3\GDDR5 GDDR5
    Maximum RAM amount 2 GB 3 GB
    Display Connectors No outputs No outputs
      Check Price Check Price
    • GeForce GTX 770M has 134% more power consumption, than GeForce GT 640M.
    • GeForce GT 640M is connected by PCIe 3.0 x16, and GeForce GTX 770M uses MXM-B (3.0) interface.
    • GeForce GTX 770M has 1 GB more memory, than GeForce GT 640M.
    • Both cards are used in Laptops.
    • GeForce GT 640M and GeForce GTX 770M are build with Kepler architecture.
    • GeForce GT 640M and GeForce GTX 770M are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce GTX 770M is 200 MHz higher, than GeForce GT 640M.

    Game benchmarks

    high / 1080p 0−1 14−16
    ultra / 1080p 0−1 8−9
    QHD / 1440p 0−1 3−4
    low / 720p 10−12 30−33
    medium / 1080p 2−3 16−18
    The average gaming FPS of GeForce GTX 770M in Assassin's Creed Odyssey is 300% more, than GeForce GT 640M.

    Full Specs

      GeForce GT 640M GeForce GTX 770M
    Architecture Kepler Kepler
    Code name N13P-GS N14E-GS
    Type Laptop Laptop
    Release date 22 March 2012 30 May 2013
    Pipelines 384 960
    Core clock speed 811 MHz
    Boost Clock 645 MHz 797 MHz
    Transistor count 1,270 million 2,540 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 63.76
    Floating-point performance 480.0 gflops 1,530 gflops
    Memory bus width 128bit 192 Bit
    Memory clock speed 1800 - 4000 MHz 2000 MHz
    Memory bandwidth 96.0 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 3.0, PCI Express 2.0
    SLI options +
    HDMI + +
    HDCP +
    Maximum VGA resolution Up to 2048x1536
    3D Blu-Ray +
    Bitcoin / BTC (SHA256) 18 Mh/s 55 Mh/s
    Laptop size medium sized large
    Standard memory configuration GDDR5
    eDP 1.2 signal support Up to 3840x2160
    LVDS signal support Up to 1920x1200
    DisplayPort Multimode (DP++) support Up to 3840x2160
    HDCP content protection +
    7.1 channel HD audio on HDMI +
    TrueHD and DTS-HD audio bitstreaming +
    H.264, VC1, MPEG2 1080p video decoder +
    Optimus + +
    Blu-Ray 3D Support +
    3D Vision / 3DTV Play +
      Check Price Check Price

    Similar compares