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    GeForce GT 645M vs HD Graphics 4400

    When comparing GeForce GT 645M and HD Graphics 4400, 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 645M and HD Graphics 4400 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    GeForce GT 645M Check Price
    HD Graphics 4400 Check Price

    GeForce GT 645M and HD Graphics 4400 are Laptop Graphics Cards

    Note: GeForce GT 645M and HD Graphics 4400 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 HD Graphics 4400 here:

    GeForce GT 645M Laptops
    HD Graphics 4400 Laptops

    Main Specs

      GeForce GT 645M HD Graphics 4400
    Power consumption (TDP) 32 Watt 20 Watt
    Interface PCIe 3.0 x16 PCIe 1.0 x16
    Memory type DDR3\GDDR5 System Shared
    Maximum RAM amount 2 GB
    Display Connectors No outputs No outputs
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    • GeForce GT 645M has 60% more power consumption, than HD Graphics 4400.
    • GeForce GT 645M is connected by PCIe 3.0 x16, and HD Graphics 4400 uses PCIe 1.0 x16 interface.
    • Both cards are used in Laptops.
    • GeForce GT 645M is build with Kepler architecture, and HD Graphics 4400 - with Gen. 7.5 Haswell.
    • GeForce GT 645M is manufactured by 28 nm process technology, and HD Graphics 4400 - by 22 nm process technology.

    Game benchmarks

    high / 1080p 1−2 0−1
    ultra / 1080p 0−1 −
    QHD / 1440p 0−1 0−1
    low / 720p 12−14 2−3
    medium / 1080p 2−3 0−1
    The average gaming FPS of GeForce GT 645M in Assassin's Creed Odyssey is 550% more, than HD Graphics 4400.

    Full Specs

      GeForce GT 645M HD Graphics 4400
    Architecture Kepler Gen. 7.5 Haswell
    Code name N13P-GS Haswell GT2
    Type Laptop Laptop
    Release date 22 March 2012 5 June 2013
    Pipelines 384 20
    Core clock speed 200 MHz
    Boost Clock 1100 MHz
    Transistor count 1,270 million 392 million
    Manufacturing process technology 28 nm 22 nm
    Texture fill rate 22.7 billion/sec 22.00
    Floating-point performance 544.5 gflops 46 gflops
    Memory bus width 128bit 64/128 Bit
    Memory clock speed 1800 MHz
    Shared memory - +
    DirectX 12 API 12 (11_1)
    Shader Model 5.1 5.1
    OpenGL 4.5 4.3
    OpenCL 1.1 1.2
    Vulkan 1.1.126 1.1.80
    CUDA +
    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 +
    Quick Sync +
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