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    Quadro K420 vs Radeon R9 M485X

    If you are going to buy a new graphics card and are choosing between Quadro K420 and Radeon R9 M485X, 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 K420 stacks up against Radeon R9 M485X, check out specs charts below.
    Quadro K420 Check Price
    Radeon R9 M485X Check Price

    Radeon R9 M485X is a Laptop Graphics Card

    Note: Radeon R9 M485X 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 R9 M485X here:

    Radeon R9 M485X Laptops

    Main Specs

      Quadro K420 Radeon R9 M485X
    Power consumption (TDP) 41 Watt 250 Watt
    Interface PCIe 2.0 x16 MXM-B (3.0)
    Supplementary power connectors None None
    Memory type 128 Bit GDDR5
    Maximum RAM amount 1 GB/2 GB 8 GB MB
    Display Connectors 1x DVI, 1x DisplayPort No outputs
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    • Radeon R9 M485X has 509% more power consumption, than Quadro K420.
    • Quadro K420 is connected by PCIe 2.0 x16, and Radeon R9 M485X uses MXM-B (3.0) interface.
    • Radeon R9 M485X has 7 GB more memory, than Quadro K420.
    • Quadro K420 is used in Desktops, and Radeon R9 M485X - in Laptops.
    • Quadro K420 is build with Kepler architecture, and Radeon R9 M485X - with GCN 3.
    • Core clock speed of Quadro K420 is 153 MHz higher, than Radeon R9 M485X.
    • Quadro K420 and Radeon R9 M485X are manufactured by 28 nm process technology.
    • Memory clock speed of Radeon R9 M485X is 3218 MHz higher, than Quadro K420.

    Game benchmarks

    high / 1080p 0−1 24−27
    ultra / 1080p 0−1 14−16
    QHD / 1440p 0−1 10−11
    4K / 2160p − 6−7
    low / 720p 9−10 45−50
    medium / 1080p 1−2 30−35
    The average gaming FPS of Radeon R9 M485X in Assassin's Creed Odyssey is 700% more, than Quadro K420.

    Full Specs

      Quadro K420 Radeon R9 M485X
    Architecture Kepler GCN 3
    Code name GK107 Amethyst
    Type Workstation Laptop
    Release date 22 July 2014 14 May 2016
    Pipelines 192 2048
    Core clock speed 876 MHz 723 MHz
    Transistor count 1,270 million 5,000 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 14.02 92.54
    Floating-point performance 336.4 gflops 2,961 gflops
    Length 160 mm
    Memory bus width 128 Bit 256 Bit
    Memory clock speed 1782 MHz 5000 MHz
    Memory bandwidth 160.0 GB/s
    Shared memory -
    DirectX 12 12 (12_0)
    Shader Model 5 6.3
    OpenGL 4.5 4.6
    OpenCL 1.2 2.0
    Vulkan + 1.2.131
    CUDA 3.0
    Bitcoin / BTC (SHA256) 11 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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