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    GeForce 820A vs Iris Plus Graphics 645

    In this comparison between GeForce 820A and Iris Plus Graphics 645 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 GeForce 820A will be the best choice, for others Iris Plus Graphics 645 will be their preference. Study the comparison tables below and make your choice.
    GeForce 820A
    Iris Plus Graphics 645 Check Price

    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

      GeForce 820A Iris Plus Graphics 645
    Power consumption (TDP) 15 Watt 15 Watt
    Interface PCIe 2.0 x16 PCIe 3.0 x1
    Memory type DDR3 DDR3/DDR4
    Maximum RAM amount 1 GB
    Display Connectors No outputs No outputs
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    • Both graphics cards have the same power consumption of 15 Watt.
    • GeForce 820A is connected by PCIe 2.0 x16, and Iris Plus Graphics 645 uses PCIe 3.0 x1 interface.
    • GeForce 820A is used in Desktops, and Iris Plus Graphics 645 - in Laptops.
    • GeForce 820A is build with Fermi 2.0 architecture, and Iris Plus Graphics 645 - with Gen. 9.5 Coffee Lake.
    • Core clock speed of GeForce 820A is 475 MHz higher, than Iris Plus Graphics 645.
    • GeForce 820A is manufactured by 28 nm process technology, and Iris Plus Graphics 645 - by 14 nm process technology.

    Game benchmarks

    high / 1080p 0−1 4−5
    ultra / 1080p − 2−3
    QHD / 1440p 0−1 0−1
    low / 720p 1−2 12−14
    medium / 1080p 0−1 5−6
    The average gaming FPS of Iris Plus Graphics 645 in Assassin's Creed Odyssey is 1200% more, than GeForce 820A.

    Full Specs

      GeForce 820A Iris Plus Graphics 645
    Architecture Fermi 2.0 Gen. 9.5 Coffee Lake
    Code name GF117 Kaby Lake GT3e
    Type Desktop Laptop
    Release date 17 March 2014 10 July 2019
    Pipelines 96 48
    Core clock speed 775 MHz 300 MHz
    Boost Clock 1150 MHz
    Transistor count 585 million
    Manufacturing process technology 28 nm 14 nm
    Texture fill rate 12.40 50.40
    Floating-point performance 297.6 gflops
    Memory bus width 64 Bit
    Memory clock speed 1800 MHz
    Memory bandwidth 14.4 GB/s
    Shared memory +
    DirectX 12 (11_0) 12 (12_1)
    Shader Model 5.1 6.4
    OpenGL 4.6 4.6
    OpenCL 1.1 2.1
    Vulkan N/A 1.1.103
    CUDA 2.1
    Quick Sync +
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