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    Quadro K620 vs Radeon HD 6990M Crossfire

    If you are going to buy a new graphics card and are choosing between Quadro K620 and Radeon HD 6990M Crossfire, 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 HD 6990M Crossfire, check out specs charts below.
    Quadro K620 Check Price
    Radeon HD 6990M Crossfire Check Price

    Radeon HD 6990M Crossfire is a Laptop Graphics Card

    Note: Radeon HD 6990M Crossfire 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 HD 6990M Crossfire here:

    Radeon HD 6990M Crossfire Laptops

    Main Specs

      Quadro K620 Radeon HD 6990M Crossfire
    Power consumption (TDP) 41 Watt
    Interface PCIe 2.0 x16
    Supplementary power connectors None
    Memory type 128 Bit GDDR5
    Maximum RAM amount 2 GB 2x2 GB
    Display Connectors 1x DVI, 1x DisplayPort
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    • Quadro K620 and Radeon HD 6990M Crossfire have maximum RAM of 2 GB.
    • Quadro K620 is used in Desktops, and Radeon HD 6990M Crossfire - in Laptops.
    • Quadro K620 is build with Maxwell architecture, and Radeon HD 6990M Crossfire - with Terascale 2.
    • Core clock speed of Quadro K620 is 343 MHz higher, than Radeon HD 6990M Crossfire.
    • Quadro K620 is manufactured by 28 nm process technology, and Radeon HD 6990M Crossfire - by 40 nm process technology.
    • Memory clock speed of Quadro K620 is 900 MHz higher, than Radeon HD 6990M Crossfire.

    Game benchmarks

    high / 1080p 10−12 35−40
    ultra / 1080p 6−7 21−24
    QHD / 1440p 1−2 16−18
    4K / 2160p − 10−11
    low / 720p 24−27 60−65
    medium / 1080p 14−16 40−45
    The average gaming FPS of Radeon HD 6990M Crossfire in Assassin's Creed Odyssey is 227% more, than Quadro K620.

    Full Specs

      Quadro K620 Radeon HD 6990M Crossfire
    Architecture Maxwell Terascale 2
    Code name GM107 Blackcomb XTX
    Type Workstation Laptop
    Release date 22 July 2014 12 July 2011
    Pipelines 384 2240
    Core clock speed 1058 MHz 715 MHz
    Boost Clock 1124 MHz
    Transistor count 1,870 million 2x1700 Million
    Manufacturing process technology 28 nm 40 nm
    Texture fill rate 26.98
    Floating-point performance 863.2 gflops
    Length 160 mm
    Memory bus width 128 Bit 256 Bit
    Memory clock speed 1800 MHz 900 MHz
    Shared memory -
    DirectX 12 DirectX 11, Shader 5.0
    Shader Model 5
    OpenGL 4.5
    OpenCL 1.2
    Vulkan +
    CUDA 5.0
    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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