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    Iris Plus Graphics 645 vs Radeon RX 640

    In this comparison between Iris Plus Graphics 645 and Radeon RX 640 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 RX 640 will be their preference. Study the comparison tables below and make your choice.
    Iris Plus Graphics 645 Check Price
    Radeon RX 640 Check Price

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

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

    Iris Plus Graphics 645 Laptops
    Radeon RX 640 Laptops

    Main Specs

      Iris Plus Graphics 645 Radeon RX 640
    Power consumption (TDP) 15 Watt 50 Watt
    Interface PCIe 3.0 x1 PCIe 3.0 x8
    Supplementary power connectors None
    Memory type DDR3/DDR4 GDDR5
    Maximum RAM amount 4 GB
    Display Connectors No outputs 1x DVI, 1x HDMI, 1x DisplayPort
      Check Price Check Price
    • Radeon RX 640 has 233% more power consumption, than Iris Plus Graphics 645.
    • Iris Plus Graphics 645 is connected by PCIe 3.0 x1, and Radeon RX 640 uses PCIe 3.0 x8 interface.
    • Both cards are used in Laptops.
    • Iris Plus Graphics 645 is build with Gen. 9.5 Coffee Lake architecture, and Radeon RX 640 - with Polaris.
    • Core clock speed of Radeon RX 640 is 918 MHz higher, than Iris Plus Graphics 645.
    • Iris Plus Graphics 645 and Radeon RX 640 are manufactured by 14 nm process technology.

    Game benchmarks

    high / 1080p 4−5 5−6
    ultra / 1080p 2−3 3−4
    QHD / 1440p 0−1 2−3
    low / 720p 12−14 16−18
    medium / 1080p 5−6 7−8
    The average gaming FPS of Radeon RX 640 in Assassin's Creed Odyssey is 33% more, than Iris Plus Graphics 645.

    Full Specs

      Iris Plus Graphics 645 Radeon RX 640
    Architecture Gen. 9.5 Coffee Lake Polaris
    Code name Kaby Lake GT3e Polaris 12
    Type Laptop Laptop
    Release date 10 July 2019 12 August 2019
    Pipelines 48 640
    Core clock speed 300 MHz 1218 MHz
    Boost Clock 1150 MHz 1218 MHz
    Transistor count 2,200 million
    Manufacturing process technology 14 nm 14 nm
    Texture fill rate 50.40 38.98
    Memory bus width 64 Bit
    Memory clock speed 6000 MHz
    Memory bandwidth 112.0 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
    FreeSync +
    Laptop size large
    Quick Sync +
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