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    GeForce GT 645M vs GeForce GTX 690

    If you are going to buy a new graphics card and are choosing between GeForce GT 645M and GeForce GTX 690, 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 645M stacks up against GeForce GTX 690, check out specs charts below.
    GeForce GT 645M Check Price
    GeForce GTX 690 Check Price

    GeForce GT 645M is a Laptop Graphics Card

    Note: GeForce GT 645M 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 GT 645M here:

    GeForce GT 645M Laptops

    Main Specs

      GeForce GT 645M GeForce GTX 690
    Power consumption (TDP) 32 Watt 300 Watt
    Interface PCIe 3.0 x16 PCIe 3.0 x16
    Supplementary power connectors Two 8-pin
    Memory type DDR3\GDDR5 GDDR5
    Maximum RAM amount 2 GB 4 GB (4 GB per GPU) GDDR5
    Display Connectors No outputs 3x DVI, 1x mini-DisplayPort
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    • GeForce GTX 690 has 837% more power consumption, than GeForce GT 645M.
    • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
    • GeForce GTX 690 has 2 GB more memory, than GeForce GT 645M.
    • GeForce GT 645M is used in Laptops, and GeForce GTX 690 - in Desktops.
    • GeForce GT 645M and GeForce GTX 690 are build with Kepler architecture.
    • GeForce GT 645M and GeForce GTX 690 are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce GTX 690 is 4208 MHz higher, than GeForce GT 645M.

    Game benchmarks

    high / 1080p 1−2 35−40
    ultra / 1080p 0−1 21−24
    QHD / 1440p 0−1 16−18
    4K / 2160p − 10−11
    low / 720p 12−14 60−65
    medium / 1080p 2−3 40−45
    The average gaming FPS of GeForce GTX 690 in Assassin's Creed Odyssey is 840% more, than GeForce GT 645M.

    Full Specs

      GeForce GT 645M GeForce GTX 690
    Architecture Kepler Kepler
    Code name N13P-GS GK104
    Type Laptop Desktop
    Release date 22 March 2012 3 May 2012
    Pipelines 384 1536
    Core clock speed 915 MHz
    Boost Clock 1019 MHz
    Transistor count 1,270 million 3,540 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 22.7 billion/sec 234 billion/sec
    Floating-point performance 544.5 gflops 2x 3,130 gflops
    Length 11.0" (27.9 cm)
    Memory bus width 128bit 512-bit (256-bit per GPU)
    Memory clock speed 1800 MHz 6008 MHz
    Memory bandwidth 384 GB/s
    Shared memory -
    DirectX 12 API 12 (11_0)
    Shader Model 5.1 5.1
    OpenGL 4.5 4.2
    OpenCL 1.1 1.2
    Vulkan 1.1.126 1.1.126
    CUDA + +
    CUDA cores 384 3072
    Bus support PCI Express 2.0, PCI Express 3.0 PCI Express 3.0
    Height 4.376" (11.1 cm)
    SLI options +
    Multi monitor support 4 displays
    HDMI + Yes (via dongle)
    HDCP + +
    Maximum VGA resolution Up to 2048x1536 2048x1536
    Audio input for HDMI Internal
    3D Blu-Ray + +
    3D Gaming +
    3D Vision Live +
    Bitcoin / BTC (SHA256) 19 Mh/s 156 Mh/s
    Laptop size medium sized
    Optimus +
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