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    GeForce GTX 660M vs GeForce GTX 860M

    When comparing GeForce GTX 660M and GeForce GTX 860M, 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 GTX 660M and GeForce GTX 860M is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    GeForce GTX 660M Check Price
    GeForce GTX 860M Check Price

    GeForce GTX 660M and GeForce GTX 860M are Laptop Graphics Cards

    Note: GeForce GTX 660M and GeForce GTX 860M 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 GTX 660M or GeForce GTX 860M here:

    GeForce GTX 660M Laptops
    GeForce GTX 860M Laptops

    Main Specs

      GeForce GTX 660M GeForce GTX 860M
    Power consumption (TDP) 50 Watt 75 Watt
    Interface MXM-B (3.0) MXM-B (3.0)
    Supplementary power connectors None
    Memory type GDDR5 GDDR5
    Maximum RAM amount 2 GB 4 GB
    Display Connectors No outputs No outputs
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    • GeForce GTX 860M has 50% more power consumption, than GeForce GTX 660M.
    • Both video cards are using MXM-B (3.0) interface connection to a motherboard.
    • GeForce GTX 860M has 2 GB more memory, than GeForce GTX 660M.
    • Both cards are used in Laptops.
    • GeForce GTX 660M is build with Kepler architecture, and GeForce GTX 860M - with Maxwell.
    • Core clock speed of GeForce GTX 660M is 38 MHz higher, than GeForce GTX 860M.
    • GeForce GTX 660M and GeForce GTX 860M are manufactured by 28 nm process technology.

    Game benchmarks

    high / 1080p 6−7 16−18
    ultra / 1080p 4−5 10−11
    QHD / 1440p 0−1 5−6
    4K / 2160p − 4−5
    low / 720p 16−18 30−35
    medium / 1080p 8−9 21−24
    The average gaming FPS of GeForce GTX 860M in Assassin's Creed Odyssey is 122% more, than GeForce GTX 660M.

    Full Specs

      GeForce GTX 660M GeForce GTX 860M
    Architecture Kepler Maxwell
    Code name N13E-GE N15P-GX
    Type Laptop Laptop
    Release date 22 March 2012 12 March 2014
    Pipelines 384 640
    Core clock speed 835 MHz 797 MHz
    Boost Clock 950 MHz 915 MHz
    Transistor count 1,270 million 1,870 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 30.4 billion/sec 43.40
    Floating-point performance 729.6 gflops 1,389 gflops
    Memory bus width 128bit 128 Bit
    Memory clock speed 2000 MHz
    Memory bandwidth 64.0 GB/s 80.0 GB/s
    Shared memory - -
    DirectX 12 API 12 (11_0)
    Shader Model 5.1 5.1
    OpenGL 4.5 4.5
    OpenCL 1.1 1.1
    Vulkan 1.1.126 1.1.126
    CUDA + +
    CUDA cores 384 1152 or 640
    Bus support PCI Express 2.0, PCI Express 3.0 PCI Express 2.0, PCI Express 3.0
    SLI options + +
    HDMI + +
    HDCP +
    Maximum VGA resolution Up to 2048x1536
    Bitcoin / BTC (SHA256) 36 Mh/s 163 Mh/s
    Laptop size large medium sized
    Standard memory configuration GDDR5
    eDP 1.2 signal support Up to 3840x2160
    LVDS signal support Up to 1920x1200
    DisplayPort Multimode (DP++) support Up to 3840x2160
    HDCP content protection +
    7.1 channel HD audio on HDMI +
    TrueHD and DTS-HD audio bitstreaming +
    H.264, VC1, MPEG2 1080p video decoder +
    Optimus + +
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