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    GeForce 825M vs GeForce GT 640

    If you are going to buy a new graphics card and are choosing between GeForce 825M and GeForce GT 640, 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 825M stacks up against GeForce GT 640, check out specs charts below.
    GeForce 825M Check Price
    GeForce GT 640 Check Price

    GeForce 825M is a Laptop Graphics Card

    Note: GeForce 825M 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 825M here:

    GeForce 825M Laptops

    Main Specs

      GeForce 825M GeForce GT 640
    Power consumption (TDP) 33 Watt 65 Watt
    Interface PCIe 3.0 x8 PCIe 3.0 x16
    Supplementary power connectors None None
    Memory type DDR3 DDR3
    Maximum RAM amount 2 GB 2 GB
    Display Connectors No outputs 1x DVI, 1x HDMI, 1x DisplayPort
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    • GeForce GT 640 has 96% more power consumption, than GeForce 825M.
    • GeForce 825M is connected by PCIe 3.0 x8, and GeForce GT 640 uses PCIe 3.0 x16 interface.
    • GeForce 825M and GeForce GT 640 have maximum RAM of 2 GB.
    • GeForce 825M is used in Laptops, and GeForce GT 640 - in Desktops.
    • GeForce 825M and GeForce GT 640 are build with Kepler architecture.
    • Core clock speed of GeForce GT 640 is 52 MHz higher, than GeForce 825M.
    • GeForce 825M and GeForce GT 640 are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce 825M is 18 MHz higher, than GeForce GT 640.

    Game benchmarks

    high / 1080p 0−1 2−3
    ultra / 1080p − 1−2
    QHD / 1440p 0−1 0−1
    low / 720p 2−3 14−16
    medium / 1080p 0−1 5−6
    The average gaming FPS of GeForce GT 640 in Assassin's Creed Odyssey is 650% more, than GeForce 825M.

    Full Specs

      GeForce 825M GeForce GT 640
    Architecture Kepler Kepler
    Code name GK208 GK107
    Type Laptop Desktop
    Release date 27 January 2014 5 June 2012
    Pipelines 384 384
    Core clock speed 850 MHz 902 MHz
    Boost Clock 941 MHz
    Transistor count 915 million 1,270 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 30.11 28.86
    Floating-point performance 722.7 gflops 692.7 gflops
    Length 145 mm
    Memory bus width 64 Bit 128 Bit
    Memory clock speed 1800 MHz 1782 MHz
    Memory bandwidth 14.4 GB/s 28.51 GB/s
    Shared memory -
    DirectX 12 (11_0) 12 (11_0)
    Shader Model 5.1 5.1
    OpenGL 4.6 4.6
    OpenCL 1.2 1.2
    Vulkan 1.1.126 1.1.126
    CUDA + 3.0
    Bitcoin / BTC (SHA256) 24 Mh/s
    Laptop size medium sized
    Optimus +
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