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    GeForce GT 645M vs GeForce MX450

    If you are going to buy a new graphics card and are choosing between GeForce GT 645M and GeForce MX450, 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 MX450, check out specs charts below.
    GeForce GT 645M Check Price
    GeForce MX450 Check Price

    GeForce GT 645M and GeForce MX450 are Laptop Graphics Cards

    Note: GeForce GT 645M and GeForce MX450 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 645M or GeForce MX450 here:

    GeForce GT 645M Laptops
    GeForce MX450 Laptops

    Main Specs

      GeForce GT 645M GeForce MX450
    Power consumption (TDP) 32 Watt 50 Watt
    Interface PCIe 3.0 x16 PCIe 4.0 x4
    Supplementary power connectors None
    Memory type DDR3\GDDR5 GDDR5,GDDR6
    Maximum RAM amount 2 GB 2 GB
    Display Connectors No outputs No outputs
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    • GeForce MX450 has 56% more power consumption, than GeForce GT 645M.
    • GeForce GT 645M is connected by PCIe 3.0 x16, and GeForce MX450 uses PCIe 4.0 x4 interface.
    • GeForce GT 645M and GeForce MX450 have maximum RAM of 2 GB.
    • Both cards are used in Laptops.
    • GeForce GT 645M is build with Kepler architecture, and GeForce MX450 - with Turing.
    • GeForce GT 645M is manufactured by 28 nm process technology, and GeForce MX450 - by 12 nm process technology.
    • Memory clock speed of GeForce MX450 is 8202 MHz higher, than GeForce GT 645M.

    Game benchmarks

    high / 1080p 1−2 16−18
    ultra / 1080p 0−1 10−11
    QHD / 1440p 0−1 4−5
    low / 720p 12−14 35−40
    medium / 1080p 2−3 21−24
    The average gaming FPS of GeForce MX450 in Assassin's Creed Odyssey is 400% more, than GeForce GT 645M.

    Full Specs

      GeForce GT 645M GeForce MX450
    Architecture Kepler Turing
    Code name N13P-GS N17S-G5 / GP107-670-A1
    Type Laptop Laptop
    Release date 22 March 2012 1 August 2020
    Pipelines 384 896
    Core clock speed 1395 MHz
    Boost Clock 1575 MHz
    Transistor count 1,270 million 4,700 million
    Manufacturing process technology 28 nm 12 nm
    Texture fill rate 22.7 billion/sec 100.8
    Floating-point performance 544.5 gflops
    Memory bus width 128bit 64 Bit
    Memory clock speed 1800 MHz 10002 MHz
    Memory bandwidth 64.03 GB/s
    Shared memory - -
    DirectX 12 API 12 (12_1)
    Shader Model 5.1 6.5
    OpenGL 4.5 4.6
    OpenCL 1.1 1.2
    Vulkan 1.1.126 1.2
    CUDA + 7.5
    CUDA cores 384
    Bus support PCI Express 2.0, PCI Express 3.0
    HDMI +
    HDCP +
    Maximum VGA resolution Up to 2048x1536
    3D Blu-Ray +
    Bitcoin / BTC (SHA256) 19 Mh/s
    Laptop size medium sized
    Optimus + +
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