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    GeForce GT 640M vs GeForce GTX 580

    Find out if it is worth upgrading your current GPU setup by comparing GeForce GT 640M and GeForce GTX 580. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between GeForce GT 640M and GeForce GTX 580. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.
    GeForce GT 640M Check Price
    GeForce GTX 580 Check Price

    GeForce GT 640M is a Laptop Graphics Card

    Note: GeForce GT 640M is only used in laptop graphics. It has 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 here:

    GeForce GT 640M Laptops

    Main Specs

      GeForce GT 640M GeForce GTX 580
    Power consumption (TDP) 32 Watt 244 Watt
    Interface PCIe 3.0 x16 PCIe 2.0 x16
    Supplementary power connectors One 6-pin and One 8-pin
    Memory type DDR3\GDDR5 GDDR5
    Maximum RAM amount 2 GB 1536 MB
    Display Connectors No outputs 2x DVI, 1x mini-HDMI
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    • GeForce GTX 580 has 662% more power consumption, than GeForce GT 640M.
    • GeForce GT 640M is connected by PCIe 3.0 x16, and GeForce GTX 580 uses PCIe 2.0 x16 interface.
    • GeForce GTX 580 has 1534 GB more memory, than GeForce GT 640M.
    • GeForce GT 640M is used in Laptops, and GeForce GTX 580 - in Desktops.
    • GeForce GT 640M is build with Kepler architecture, and GeForce GTX 580 - with Fermi.
    • GeForce GT 640M is manufactured by 28 nm process technology, and GeForce GTX 580 - by 40 nm process technology.
    • Memory clock speed of GeForce GTX 580 is 204 MHz higher, than GeForce GT 640M.

    Game benchmarks

    high / 1080p 0−1 21−24
    ultra / 1080p 0−1 14−16
    QHD / 1440p 0−1 8−9
    4K / 2160p − 6−7
    low / 720p 10−12 40−45
    medium / 1080p 2−3 27−30
    The average gaming FPS of GeForce GTX 580 in Assassin's Creed Odyssey is 483% more, than GeForce GT 640M.

    Full Specs

      GeForce GT 640M GeForce GTX 580
    Architecture Kepler Fermi
    Code name N13P-GS GF110
    Type Laptop Desktop
    Release date 22 March 2012 9 November 2010
    Pipelines 384 512
    Core clock speed 1544 MHz
    Boost Clock 645 MHz
    Transistor count 1,270 million 3,000 million
    Manufacturing process technology 28 nm 40 nm
    Texture fill rate 49.4 billion/sec
    Floating-point performance 480.0 gflops 1,581.1 gflops
    Length 10.5" (267 mm) (26.7 cm)
    Memory bus width 128bit 384 Bit
    Memory clock speed 1800 - 4000 MHz 2004 MHz (4008 data rate)
    Memory bandwidth 192.4 GB/s
    Shared memory -
    DirectX 12 API 12 (11_0)
    Shader Model 5.1 5.1
    OpenGL 4.5 4.2
    OpenCL 1.1 1.1
    Vulkan 1.1.126 N/A
    CUDA + +
    CUDA cores 384 512
    Bus support PCI Express 2.0, PCI Express 3.0 PCI-E 2.0 x 16
    Height 4.376" (111 mm) (11.1 cm)
    SLI options +
    Multi monitor support +
    HDMI + +
    HDCP +
    Maximum VGA resolution Up to 2048x1536 2048x1536
    Audio input for HDMI Internal
    3D Blu-Ray +
    Bitcoin / BTC (SHA256) 18 Mh/s 142 Mh/s
    Laptop size medium sized
    Optimus +
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