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    GeForce GT 640 vs GeForce GTX 770

    If you are going to buy a new graphics card and are choosing between GeForce GT 640 and GeForce GTX 770, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce GT 640 stacks up against GeForce GTX 770, check out specs charts below.
    GeForce GT 640 Check Price
    GeForce GTX 770 Check Price

    Main Specs

      GeForce GT 640 GeForce GTX 770
    Power consumption (TDP) 65 Watt 230 Watt
    Interface PCIe 3.0 x16 PCIe 3.0 x16
    Supplementary power connectors None One 8-pin and one 6-pin
    Memory type DDR3 GDDR5
    Maximum RAM amount 2 GB 2 GB
    Display Connectors 1x DVI, 1x HDMI, 1x DisplayPort 2x DVI, 1x HDMI, 1x DisplayPort
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    • GeForce GTX 770 has 253% more power consumption, than GeForce GT 640.
    • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
    • GeForce GT 640 and GeForce GTX 770 have maximum RAM of 2 GB.
    • Both cards are used in Desktops.
    • GeForce GT 640 and GeForce GTX 770 are build with Kepler architecture.
    • Core clock speed of GeForce GTX 770 is 144 MHz higher, than GeForce GT 640.
    • GeForce GT 640 and GeForce GTX 770 are manufactured by 28 nm process technology.
    • GeForce GT 640 is 135 mm longer, than GeForce GTX 770.
    • Memory clock speed of GeForce GTX 770 is 5230 MHz higher, than GeForce GT 640.

    Game benchmarks

    high / 1080p 2−3 35−40
    ultra / 1080p 1−2 21−24
    QHD / 1440p 0−1 16−18
    4K / 2160p − 10−11
    low / 720p 14−16 60−65
    medium / 1080p 5−6 40−45
    The average gaming FPS of GeForce GTX 770 in Assassin's Creed Odyssey is 583% more, than GeForce GT 640.

    Full Specs

      GeForce GT 640 GeForce GTX 770
    Architecture Kepler Kepler
    Code name GK107 GK104
    Type Desktop Desktop
    Release date 5 June 2012 30 May 2013
    Pipelines 384 1536
    Core clock speed 902 MHz 1046 MHz
    Boost Clock 1085 MHz
    Transistor count 1,270 million 3,540 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 28.86 134 billion/sec
    Floating-point performance 692.7 gflops 3,333 gflops
    Length 145 mm 10.5" (26.7 cm)
    Memory bus width 128 Bit 256 Bit
    Memory clock speed 1782 MHz 7012 MHz
    Memory bandwidth 28.51 GB/s 224.3 GB/s
    DirectX 12 (11_0) 12 (11_0)
    Shader Model 5.1 5.1
    OpenGL 4.6 4.3
    OpenCL 1.2 1.2
    Vulkan 1.1.126 1.1.126
    CUDA 3.0 +
    CUDA cores 1536
    Bus support PCI Express 3.0
    Height 4.376" (11.1 cm)
    Multi monitor support 4 displays
    HDMI +
    HDCP +
    Maximum VGA resolution 2048x1536
    Audio input for HDMI Internal
    3D Gaming +
    3D Vision +
    3D Vision Live +
    Bitcoin / BTC (SHA256) 24 Mh/s 113 Mh/s
    Ethereum / ETH (DaggerHashimoto) 3.9 Mh/s
    Blu Ray 3D +
    Minimum recommended system power 600 Watt
    PhysX +
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