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    Iris Plus Graphics 645 vs Radeon Pro 580X

    In this comparison between Iris Plus Graphics 645 and Radeon Pro 580X you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people Iris Plus Graphics 645 will be the best choice, for others Radeon Pro 580X will be their preference. Study the comparison tables below and make your choice.
    Iris Plus Graphics 645 Check Price
    Radeon Pro 580X

    Iris Plus Graphics 645 is a Laptop Graphics Card

    Note: Iris Plus Graphics 645 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 Iris Plus Graphics 645 here:

    Iris Plus Graphics 645 Laptops

    Main Specs

      Iris Plus Graphics 645 Radeon Pro 580X
    Power consumption (TDP) 15 Watt 150 Watt
    Interface PCIe 3.0 x1 PCIe 3.0 x16
    Supplementary power connectors None
    Memory type DDR3/DDR4 GDDR5
    Maximum RAM amount 8 GB
    Display Connectors No outputs No outputs
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    • Radeon Pro 580X has 900% more power consumption, than Iris Plus Graphics 645.
    • Iris Plus Graphics 645 is connected by PCIe 3.0 x1, and Radeon Pro 580X uses PCIe 3.0 x16 interface.
    • Iris Plus Graphics 645 is used in Laptops, and Radeon Pro 580X - in Desktops.
    • Iris Plus Graphics 645 is build with Gen. 9.5 Coffee Lake architecture, and Radeon Pro 580X - with GCN 4.0.
    • Core clock speed of Radeon Pro 580X is 800 MHz higher, than Iris Plus Graphics 645.
    • Iris Plus Graphics 645 and Radeon Pro 580X are manufactured by 14 nm process technology.

    Game benchmarks

    high / 1080p 4−5 35−40
    ultra / 1080p 2−3 24−27
    QHD / 1440p 0−1 18−20
    4K / 2160p − 10−12
    low / 720p 12−14 60−65
    medium / 1080p 5−6 45−50
    The average gaming FPS of Radeon Pro 580X in Assassin's Creed Odyssey is 616% more, than Iris Plus Graphics 645.

    Full Specs

      Iris Plus Graphics 645 Radeon Pro 580X
    Architecture Gen. 9.5 Coffee Lake GCN 4.0
    Code name Kaby Lake GT3e Polaris 20
    Type Laptop Workstation
    Release date 10 July 2019 18 March 2019
    Pipelines 48 2304
    Core clock speed 300 MHz 1100 MHz
    Boost Clock 1150 MHz 1200 MHz
    Transistor count 5,700 million
    Manufacturing process technology 14 nm 14 nm
    Texture fill rate 50.40 172.8
    Memory bus width 256 Bit
    Memory clock speed 6780 MHz
    Memory bandwidth 217.0 GB/s
    Shared memory +
    DirectX 12 (12_1) 12 (12_0)
    Shader Model 6.4 6.4
    OpenGL 4.6 4.6
    OpenCL 2.1 2.0
    Vulkan 1.1.103 1.2.131
    Quick Sync +
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