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    GeForce 9800M GT SLI vs GeForce GT 640M LE

    When comparing GeForce 9800M GT SLI and GeForce GT 640M LE, 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 9800M GT SLI and GeForce GT 640M LE is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    GeForce 9800M GT SLI Check Price
    GeForce GT 640M LE Check Price

    GeForce 9800M GT SLI and GeForce GT 640M LE are Laptop Graphics Cards

    Note: GeForce 9800M GT SLI and GeForce GT 640M LE 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 9800M GT SLI or GeForce GT 640M LE here:

    GeForce 9800M GT SLI Laptops
    GeForce GT 640M LE Laptops

    Main Specs

      GeForce 9800M GT SLI GeForce GT 640M LE
    Power consumption (TDP) 130 Watt 20 Watt
    Interface PCIe 2.0 x16
    Memory type GDDR3 DDR3\DDR5
    Maximum RAM amount 512 MB 2 GB
    Display Connectors No outputs
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    • GeForce 9800M GT SLI has 550% more power consumption, than GeForce GT 640M LE.
    • GeForce 9800M GT SLI has 510 GB more memory, than GeForce GT 640M LE.
    • Both cards are used in Laptops.
    • GeForce 9800M GT SLI is build with G9x architecture, and GeForce GT 640M LE - with Fermi / Kepler.
    • GeForce 9800M GT SLI is manufactured by 65 nm process technology, and GeForce GT 640M LE - by 28 nm process technology.
    • Memory clock speed of GeForce GT 640M LE is 1000 MHz higher, than GeForce 9800M GT SLI.

    Game benchmarks

    high / 1080p 5−6 0−1
    ultra / 1080p 3−4 −
    QHD / 1440p 0−1 0−1
    low / 720p 14−16 1−2
    medium / 1080p 7−8 0−1
    The average gaming FPS of GeForce 9800M GT SLI in Assassin's Creed Odyssey is 1400% more, than GeForce GT 640M LE.

    Full Specs

      GeForce 9800M GT SLI GeForce GT 640M LE
    Architecture G9x Fermi / Kepler
    Code name NB9E-GT2 N13P-LP
    Type Laptop Laptop
    Release date 15 July 2008 22 March 2012
    Pipelines 192 384
    Core clock speed 500 MHz
    Transistor count 1508 Million 585 million
    Manufacturing process technology 65 nm 28 nm
    Floating-point performance 384.0 gflops
    Memory bus width 256 Bit 128bit
    Memory clock speed 800 MHz 1800 - 4000 MHz
    Shared memory - -
    DirectX DirectX 10, Shader 4.0 12 API
    Shader Model 5.1
    OpenGL 4.5
    OpenCL 1.1
    Vulkan N/A
    CUDA + +
    CUDA cores Up to 384
    Bus support PCI Express 2.0, PCI Express 3.0
    SLI options +
    HDMI +
    HDCP +
    Maximum VGA resolution Up to 2048x1536
    3D Blu-Ray +
    Bitcoin / BTC (SHA256) 14 Mh/s
    Laptop size large medium sized
    Optimus +
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