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    Quadro K620 vs Radeon Pro 555X

    When comparing Quadro K620 and Radeon Pro 555X, 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 Quadro K620 and Radeon Pro 555X is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    Quadro K620 Check Price
    Radeon Pro 555X Check Price

    Radeon Pro 555X is a Laptop Graphics Card

    Note: Radeon Pro 555X 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 Radeon Pro 555X here:

    Radeon Pro 555X Laptops

    Main Specs

      Quadro K620 Radeon Pro 555X
    Power consumption (TDP) 41 Watt 75 Watt
    Interface PCIe 2.0 x16 PCIe 3.0 x8
    Supplementary power connectors None None
    Memory type 128 Bit GDDR5
    Maximum RAM amount 2 GB 2 GB
    Display Connectors 1x DVI, 1x DisplayPort No outputs
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    • Radeon Pro 555X has 82% more power consumption, than Quadro K620.
    • Quadro K620 is connected by PCIe 2.0 x16, and Radeon Pro 555X uses PCIe 3.0 x8 interface.
    • Quadro K620 and Radeon Pro 555X have maximum RAM of 2 GB.
    • Quadro K620 is used in Desktops, and Radeon Pro 555X - in Mobile workstations.
    • Quadro K620 is build with Maxwell architecture, and Radeon Pro 555X - with Polaris.
    • Core clock speed of Quadro K620 is 203 MHz higher, than Radeon Pro 555X.
    • Quadro K620 is manufactured by 28 nm process technology, and Radeon Pro 555X - by 14 nm process technology.
    • Memory clock speed of Radeon Pro 555X is 3280 MHz higher, than Quadro K620.

    Game benchmarks

    high / 1080p 10−12 16−18
    ultra / 1080p 6−7 10−11
    QHD / 1440p 1−2 4−5
    4K / 2160p − 4−5
    low / 720p 24−27 30−35
    medium / 1080p 14−16 21−24
    The average gaming FPS of Radeon Pro 555X in Assassin's Creed Odyssey is 54% more, than Quadro K620.

    Full Specs

      Quadro K620 Radeon Pro 555X
    Architecture Maxwell Polaris
    Code name GM107 Polaris 21
    Type Workstation Mobile workstation
    Release date 22 July 2014 5 June 2017
    Pipelines 384 768
    Core clock speed 1058 MHz 855 MHz
    Boost Clock 1124 MHz
    Transistor count 1,870 million 3,000 million
    Manufacturing process technology 28 nm 14 nm
    Texture fill rate 26.98 43.54
    Floating-point performance 863.2 gflops
    Length 160 mm
    Memory bus width 128 Bit 128 Bit
    Memory clock speed 1800 MHz 5080 MHz
    Memory bandwidth 81.6 GB/s
    Shared memory -
    DirectX 12 12 (12_0)
    Shader Model 5 6.4
    OpenGL 4.5 4.6
    OpenCL 1.2 2.0
    Vulkan + 1.2.131
    CUDA 5.0
    FreeSync +
    Bitcoin / BTC (SHA256) 104 Mh/s
    Laptop size large
    3D Vision Pro +
    Mosaic +
    Width 1" (2.5 cm)
    Number of simultaneous displays 4
    nView Desktop Management +
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