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    GeForce GT 645M vs Mobility Radeon HD 5870

    When comparing GeForce GT 645M and Mobility Radeon HD 5870, 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 Mobility Radeon HD 5870 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
    Mobility Radeon HD 5870 Check Price

    GeForce GT 645M and Mobility Radeon HD 5870 are Laptop Graphics Cards

    Note: GeForce GT 645M and Mobility Radeon HD 5870 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 Mobility Radeon HD 5870 here:

    GeForce GT 645M Laptops
    Mobility Radeon HD 5870 Laptops

    Main Specs

      GeForce GT 645M Mobility Radeon HD 5870
    Power consumption (TDP) 32 Watt 50 Watt
    Interface PCIe 3.0 x16 MXM-B (3.0)
    Memory type DDR3\GDDR5 DDR3, GDDR3, GDDR5
    Maximum RAM amount 2 GB 1 GB
    Display Connectors No outputs No outputs
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    • Mobility Radeon HD 5870 has 56% more power consumption, than GeForce GT 645M.
    • GeForce GT 645M is connected by PCIe 3.0 x16, and Mobility Radeon HD 5870 uses MXM-B (3.0) interface.
    • GeForce GT 645M has 1 GB more memory, than Mobility Radeon HD 5870.
    • Both cards are used in Laptops.
    • GeForce GT 645M is build with Kepler architecture, and Mobility Radeon HD 5870 - with Terascale 2.
    • GeForce GT 645M is manufactured by 28 nm process technology, and Mobility Radeon HD 5870 - by 40 nm process technology.
    • Memory clock speed of GeForce GT 645M is 800 MHz higher, than Mobility Radeon HD 5870.

    Game benchmarks

    high / 1080p 1−2 10−11
    ultra / 1080p 0−1 6−7
    QHD / 1440p 0−1 0−1
    low / 720p 12−14 21−24
    medium / 1080p 2−3 12−14
    The average gaming FPS of Mobility Radeon HD 5870 in Assassin's Creed Odyssey is 200% more, than GeForce GT 645M.

    Full Specs

      GeForce GT 645M Mobility Radeon HD 5870
    Architecture Kepler Terascale 2
    Code name N13P-GS Broadway-XT
    Type Laptop Laptop
    Release date 22 March 2012 7 January 2010
    Pipelines 384 800
    Core clock speed 700 MHz
    Transistor count 1,270 million 1,040 million
    Manufacturing process technology 28 nm 40 nm
    Texture fill rate 22.7 billion/sec 28.00
    Floating-point performance 544.5 gflops 1,120.0 gflops
    Memory bus width 128bit 128 Bit
    Memory clock speed 1800 MHz 1000 MHz
    Memory bandwidth 64 GB/s
    Shared memory - -
    DirectX 12 API 11.2 (11_0)
    Shader Model 5.1 5.0
    OpenGL 4.5 4.4
    OpenCL 1.1 1.2
    Vulkan 1.1.126 N/A
    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 large
    Optimus +
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