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    GeForce 940MX vs GeForce GTX 580M

    When comparing GeForce 940MX and GeForce GTX 580M, 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 940MX and GeForce GTX 580M is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    GeForce 940MX Check Price
    GeForce GTX 580M Check Price

    GeForce 940MX and GeForce GTX 580M are Laptop Graphics Cards

    Note: GeForce 940MX and GeForce GTX 580M 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 940MX or GeForce GTX 580M here:

    GeForce 940MX Laptops
    GeForce GTX 580M Laptops

    Main Specs

      GeForce 940MX GeForce GTX 580M
    Power consumption (TDP) 23 Watt 100 Watt
    Interface PCIe 3.0 x8 MXM-B (3.0)
    Supplementary power connectors None None
    Memory type DDR3, GDDR5 GDDR5
    Maximum RAM amount 4 GB 2 MB
    Display Connectors No outputs No outputs
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    • GeForce GTX 580M has 334% more power consumption, than GeForce 940MX.
    • GeForce 940MX is connected by PCIe 3.0 x8, and GeForce GTX 580M uses MXM-B (3.0) interface.
    • GeForce 940MX has 2 GB more memory, than GeForce GTX 580M.
    • Both cards are used in Laptops.
    • GeForce 940MX is build with Maxwell architecture, and GeForce GTX 580M - with Fermi.
    • Core clock speed of GeForce 940MX is 502 MHz higher, than GeForce GTX 580M.
    • GeForce 940MX is manufactured by 28 nm process technology, and GeForce GTX 580M - by 40 nm process technology.
    • Memory clock speed of GeForce 940MX is 2500 MHz higher, than GeForce GTX 580M.

    Game benchmarks

    high / 1080p 7−8 10−12
    ultra / 1080p 4−5 6−7
    QHD / 1440p 0−1 1−2
    low / 720p 16−18 24−27
    medium / 1080p 8−9 14−16
    The average gaming FPS of GeForce GTX 580M in Assassin's Creed Odyssey is 55% more, than GeForce 940MX.

    Full Specs

      GeForce 940MX GeForce GTX 580M
    Architecture Maxwell Fermi
    Code name N16S-GTR-B/S N12E-GTX2
    Type Laptop Laptop
    Release date 10 March 2016 28 June 2011
    Pipelines 384 384
    Core clock speed 1122 MHz 620 MHz
    Boost Clock 1242 MHz
    Transistor count 1,870 million 1,950 million
    Manufacturing process technology 28 nm 40 nm
    Texture fill rate 23.83 39.7 billion/sec
    Floating-point performance 762.6 gflops 952.3 gflops
    Memory bus width 64 Bit 256 Bit
    Memory clock speed 4000 MHz 1500 MHz
    Memory bandwidth 40.1 GB/s 96.0 GB/s
    Shared memory - -
    DirectX 12 (11_0) 12 API
    Shader Model 5.1 5.1
    OpenGL 4.5 4.5
    OpenCL 1.2 1.1
    Vulkan 1.1 N/A
    CUDA + +
    CUDA cores 384
    Bus support PCI Express 3.0 PCI-E 2.0
    SLI options +
    3D Blu-Ray +
    3D Gaming +
    Bitcoin / BTC (SHA256) 102 Mh/s 40 Mh/s
    Laptop size medium sized large
    Optimus + +
    GPU Boost 2.0
    GameWorks +
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