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    GeForce GT 640M LE vs Radeon HD 8790M

    When comparing GeForce GT 640M LE and Radeon HD 8790M, 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 640M LE and Radeon HD 8790M is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    GeForce GT 640M LE Check Price
    Radeon HD 8790M Check Price

    GeForce GT 640M LE and Radeon HD 8790M are Laptop Graphics Cards

    Note: GeForce GT 640M LE and Radeon HD 8790M 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 640M LE or Radeon HD 8790M here:

    GeForce GT 640M LE Laptops
    Radeon HD 8790M Laptops

    Main Specs

      GeForce GT 640M LE Radeon HD 8790M
    Power consumption (TDP) 20 Watt
    Interface PCIe 2.0 x16 MXM-A (3.0)
    Supplementary power connectors None
    Memory type DDR3\DDR5 GDDR5
    Maximum RAM amount 2 GB 2 GB
    Display Connectors No outputs No outputs
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    • GeForce GT 640M LE is connected by PCIe 2.0 x16, and Radeon HD 8790M uses MXM-A (3.0) interface.
    • GeForce GT 640M LE and Radeon HD 8790M have maximum RAM of 2 GB.
    • Both cards are used in Laptops.
    • GeForce GT 640M LE is build with Fermi / Kepler architecture, and Radeon HD 8790M - with GCN.
    • GeForce GT 640M LE and Radeon HD 8790M are manufactured by 28 nm process technology.
    • Memory clock speed of Radeon HD 8790M is 2700 MHz higher, than GeForce GT 640M LE.

    Game benchmarks

    high / 1080p 0−1 3−4
    ultra / 1080p − 1−2
    QHD / 1440p 0−1 0−1
    low / 720p 1−2 14−16
    medium / 1080p 0−1 6−7
    The average gaming FPS of Radeon HD 8790M in Assassin's Creed Odyssey is 1400% more, than GeForce GT 640M LE.

    Full Specs

      GeForce GT 640M LE Radeon HD 8790M
    Architecture Fermi / Kepler GCN
    Code name N13P-LP Mars XTX
    Type Laptop Laptop
    Release date 22 March 2012 16 November 2012
    Pipelines 384 384
    Core clock speed 850 MHz
    Boost Clock 900 MHz
    Transistor count 585 million 950 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 21.60
    Floating-point performance 384.0 gflops 691.2 gflops
    Memory bus width 128bit 128 Bit
    Memory clock speed 1800 - 4000 MHz 4500 MHz
    Memory bandwidth 64 GB/s
    Shared memory - -
    DirectX 12 API 12 (11_1)
    Shader Model 5.1 5.1
    OpenGL 4.5 4.6
    OpenCL 1.1 1.2
    Vulkan N/A 1.2.131
    CUDA +
    CUDA cores Up to 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) 14 Mh/s 80 Mh/s
    Laptop size medium sized medium sized
    Optimus +
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