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    Quadro K620 vs Radeon RX 640

    If you are going to buy a new graphics card and are choosing between Quadro K620 and Radeon RX 640, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the Quadro K620 stacks up against Radeon RX 640, check out specs charts below.
    Quadro K620 Check Price
    Radeon RX 640 Check Price

    Radeon RX 640 is a Laptop Graphics Card

    Note: Radeon RX 640 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 RX 640 here:

    Radeon RX 640 Laptops

    Main Specs

      Quadro K620 Radeon RX 640
    Power consumption (TDP) 41 Watt 50 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 4 GB
    Display Connectors 1x DVI, 1x DisplayPort 1x DVI, 1x HDMI, 1x DisplayPort
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    • Radeon RX 640 has 21% more power consumption, than Quadro K620.
    • Quadro K620 is connected by PCIe 2.0 x16, and Radeon RX 640 uses PCIe 3.0 x8 interface.
    • Radeon RX 640 has 2 GB more memory, than Quadro K620.
    • Quadro K620 is used in Desktops, and Radeon RX 640 - in Laptops.
    • Quadro K620 is build with Maxwell architecture, and Radeon RX 640 - with Polaris.
    • Core clock speed of Radeon RX 640 is 160 MHz higher, than Quadro K620.
    • Quadro K620 is manufactured by 28 nm process technology, and Radeon RX 640 - by 14 nm process technology.
    • Memory clock speed of Radeon RX 640 is 4200 MHz higher, than Quadro K620.

    Game benchmarks

    high / 1080p 10−12 5−6
    ultra / 1080p 6−7 3−4
    QHD / 1440p 1−2 2−3
    low / 720p 24−27 16−18
    medium / 1080p 14−16 7−8
    The average gaming FPS of Quadro K620 in Assassin's Creed Odyssey is 57% more, than Radeon RX 640.

    Full Specs

      Quadro K620 Radeon RX 640
    Architecture Maxwell Polaris
    Code name GM107 Polaris 12
    Type Workstation Laptop
    Release date 22 July 2014 12 August 2019
    Pipelines 384 640
    Core clock speed 1058 MHz 1218 MHz
    Boost Clock 1124 MHz 1218 MHz
    Transistor count 1,870 million 2,200 million
    Manufacturing process technology 28 nm 14 nm
    Texture fill rate 26.98 38.98
    Floating-point performance 863.2 gflops
    Length 160 mm
    Memory bus width 128 Bit 64 Bit
    Memory clock speed 1800 MHz 6000 MHz
    Memory bandwidth 112.0 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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