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    Iris Plus Graphics 640 vs Iris Plus Graphics 645

    When comparing Iris Plus Graphics 640 and Iris Plus Graphics 645, 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 Iris Plus Graphics 640 and Iris Plus Graphics 645 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    Iris Plus Graphics 640 Check Price
    Iris Plus Graphics 645 Check Price

    Iris Plus Graphics 640 and Iris Plus Graphics 645 are Laptop Graphics Cards

    Note: Iris Plus Graphics 640 and Iris Plus Graphics 645 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 Iris Plus Graphics 640 or Iris Plus Graphics 645 here:

    Iris Plus Graphics 640 Laptops
    Iris Plus Graphics 645 Laptops

    Main Specs

      Iris Plus Graphics 640 Iris Plus Graphics 645
    Power consumption (TDP) 15 Watt 15 Watt
    Interface PCIe 3.0 x1 PCIe 3.0 x1
    Memory type DDR3L/LPDDR3/DDR4 DDR3/DDR4
    Maximum RAM amount 32 GB
    Display Connectors No outputs No outputs
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    • Both graphics cards have the same power consumption of 15 Watt.
    • Both video cards are using PCIe 3.0 x1 interface connection to a motherboard.
    • Both cards are used in Laptops.
    • Iris Plus Graphics 640 is build with Gen. 9.5 Kaby Lake architecture, and Iris Plus Graphics 645 - with Gen. 9.5 Coffee Lake.
    • Both graphics cards have the same core clock speed.
    • Iris Plus Graphics 640 and Iris Plus Graphics 645 are manufactured by 14 nm process technology.

    Game benchmarks

    high / 1080p 6−7 4−5
    ultra / 1080p 4−5 2−3
    QHD / 1440p 0−1 0−1
    low / 720p 16−18 12−14
    medium / 1080p 8−9 5−6
    The average gaming FPS of Iris Plus Graphics 640 in Assassin's Creed Odyssey is 50% more, than Iris Plus Graphics 645.

    Full Specs

      Iris Plus Graphics 640 Iris Plus Graphics 645
    Architecture Gen. 9.5 Kaby Lake Gen. 9.5 Coffee Lake
    Code name Kaby Lake GT3e Kaby Lake GT3e
    Type Laptop Laptop
    Release date 3 January 2017 10 July 2019
    Pipelines 48 48
    Core clock speed 300 MHz 300 MHz
    Boost Clock 1050 MHz 1150 MHz
    Transistor count 189 million
    Manufacturing process technology 14 nm 14 nm
    Texture fill rate 52.80 50.40
    Memory bus width 64/128 Bit
    Shared memory + +
    DirectX 12 (12_1) 12 (12_1)
    Shader Model 6.4 6.4
    OpenGL 4.6 4.6
    OpenCL 2.1 2.1
    Vulkan 1.1.103 1.1.103
    Quick Sync + +
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