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    GeForce GT 645M vs Iris Plus Graphics 655

    Find out if it is worth upgrading your current GPU setup by comparing GeForce GT 645M and Iris Plus Graphics 655. 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 645M and Iris Plus Graphics 655. 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 645M Check Price
    Iris Plus Graphics 655 Check Price

    GeForce GT 645M and Iris Plus Graphics 655 are Laptop Graphics Cards

    Note: GeForce GT 645M and Iris Plus Graphics 655 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 645M or Iris Plus Graphics 655 here:

    GeForce GT 645M Laptops
    Iris Plus Graphics 655 Laptops

    Main Specs

      GeForce GT 645M Iris Plus Graphics 655
    Power consumption (TDP) 32 Watt 15 Watt
    Interface PCIe 3.0 x16 PCIe 3.0 x1
    Memory type DDR3\GDDR5 DDR3/DDR4
    Maximum RAM amount 2 GB
    Display Connectors No outputs No outputs
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    • GeForce GT 645M has 113% more power consumption, than Iris Plus Graphics 655.
    • GeForce GT 645M is connected by PCIe 3.0 x16, and Iris Plus Graphics 655 uses PCIe 3.0 x1 interface.
    • Both cards are used in Laptops.
    • GeForce GT 645M is build with Kepler architecture, and Iris Plus Graphics 655 - with Gen. 9.5 Kaby Lake.
    • GeForce GT 645M is manufactured by 28 nm process technology, and Iris Plus Graphics 655 - by 14 nm process technology.

    Game benchmarks

    high / 1080p 1−2 12−14
    ultra / 1080p 0−1 7−8
    QHD / 1440p 0−1 2−3
    low / 720p 12−14 27−30
    medium / 1080p 2−3 16−18
    The average gaming FPS of Iris Plus Graphics 655 in Assassin's Creed Odyssey is 280% more, than GeForce GT 645M.

    Full Specs

      GeForce GT 645M Iris Plus Graphics 655
    Architecture Kepler Gen. 9.5 Kaby Lake
    Code name N13P-GS Kaby Lake GT3e
    Type Laptop Laptop
    Release date 22 March 2012 1 September 2017
    Pipelines 384 48
    Core clock speed 300 MHz
    Boost Clock 1200 MHz
    Transistor count 1,270 million 189 million
    Manufacturing process technology 28 nm 14 nm
    Texture fill rate 22.7 billion/sec 50.40
    Floating-point performance 544.5 gflops
    Memory bus width 128bit
    Memory clock speed 1800 MHz
    Shared memory - +
    DirectX 12 API 12 (12_1)
    Shader Model 5.1 6.4
    OpenGL 4.5 4.6
    OpenCL 1.1 2.1
    Vulkan 1.1.126 1.1.103
    CUDA +
    CUDA cores 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) 19 Mh/s
    Laptop size medium sized
    Optimus +
    Quick Sync +
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