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    Mobility Radeon HD 4870 X2 vs Quadro K420

    When comparing Mobility Radeon HD 4870 X2 and Quadro K420, 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 Mobility Radeon HD 4870 X2 and Quadro K420 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    Mobility Radeon HD 4870 X2 Check Price
    Quadro K420 Check Price

    Mobility Radeon HD 4870 X2 is a Laptop Graphics Card

    Note: Mobility Radeon HD 4870 X2 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 Mobility Radeon HD 4870 X2 here:

    Mobility Radeon HD 4870 X2 Laptops

    Main Specs

      Mobility Radeon HD 4870 X2 Quadro K420
    Power consumption (TDP) 41 Watt
    Interface PCIe 2.0 x16 PCIe 2.0 x16
    Supplementary power connectors None
    Memory type GDDR3, GDDR5 128 Bit
    Maximum RAM amount 2 GB 1 GB/2 GB
    Display Connectors No outputs 1x DVI, 1x DisplayPort
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    • Both video cards are using PCIe 2.0 x16 interface connection to a motherboard.
    • Mobility Radeon HD 4870 X2 has 1 GB more memory, than Quadro K420.
    • Mobility Radeon HD 4870 X2 is used in Laptops, and Quadro K420 - in Desktops.
    • Mobility Radeon HD 4870 X2 is build with Terascale 1 architecture, and Quadro K420 - with Kepler.
    • Core clock speed of Quadro K420 is 326 MHz higher, than Mobility Radeon HD 4870 X2.
    • Mobility Radeon HD 4870 X2 is manufactured by 55 nm process technology, and Quadro K420 - by 28 nm process technology.
    • Memory clock speed of Quadro K420 is 894 MHz higher, than Mobility Radeon HD 4870 X2.

    Game benchmarks

    high / 1080p 9−10 0−1
    ultra / 1080p 5−6 0−1
    QHD / 1440p 0−1 0−1
    low / 720p 21−24 9−10
    medium / 1080p 12−14 1−2
    The average gaming FPS of Mobility Radeon HD 4870 X2 in Assassin's Creed Odyssey is 240% more, than Quadro K420.

    Full Specs

      Mobility Radeon HD 4870 X2 Quadro K420
    Architecture Terascale 1 Kepler
    Code name M98-XT GK107
    Type Laptop Workstation
    Release date 9 January 2009 22 July 2014
    Pipelines 1600 192
    Core clock speed 550 MHz 876 MHz
    Transistor count 956 million 1,270 million
    Manufacturing process technology 55 nm 28 nm
    Texture fill rate 22.00 14.02
    Floating-point performance 2x 880.0 gflops 336.4 gflops
    Length 160 mm
    Memory bus width 256 Bit 128 Bit
    Memory clock speed 888 MHz 1782 MHz
    Memory bandwidth 89.6 GB/s
    Shared memory -
    DirectX 10.1 (10_1) 12
    Shader Model 4.1 5
    OpenGL 3.3 4.5
    OpenCL 1.1 1.2
    Vulkan N/A +
    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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