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    Mobility Radeon HD 3870 X2 vs Radeon RX 570X

    If you are going to buy a new graphics card and are choosing between Mobility Radeon HD 3870 X2 and Radeon RX 570X, 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 Mobility Radeon HD 3870 X2 stacks up against Radeon RX 570X, check out specs charts below.
    Mobility Radeon HD 3870 X2 Check Price
    Radeon RX 570X

    Mobility Radeon HD 3870 X2 is a Laptop Graphics Card

    Note: Mobility Radeon HD 3870 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 3870 X2 here:

    Mobility Radeon HD 3870 X2 Laptops

    Main Specs

      Mobility Radeon HD 3870 X2 Radeon RX 570X
    Power consumption (TDP) 110 Watt 120 Watt
    Interface PCIe 2.0 x16 PCIe 3.0 x16
    Supplementary power connectors 1x 6-pin
    Memory type GDDR3 GDDR5
    Maximum RAM amount 512 MB 8 GB
    Display Connectors No outputs 1x DVI, 1x HDMI, 3x DisplayPort
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    • Radeon RX 570X has 9% more power consumption, than Mobility Radeon HD 3870 X2.
    • Mobility Radeon HD 3870 X2 is connected by PCIe 2.0 x16, and Radeon RX 570X uses PCIe 3.0 x16 interface.
    • Mobility Radeon HD 3870 X2 has 504 GB more memory, than Radeon RX 570X.
    • Mobility Radeon HD 3870 X2 is used in Laptops, and Radeon RX 570X - in Desktops.
    • Mobility Radeon HD 3870 X2 is build with RV6xx architecture, and Radeon RX 570X - with GCN 4.0.
    • Core clock speed of Radeon RX 570X is 508 MHz higher, than Mobility Radeon HD 3870 X2.
    • Mobility Radeon HD 3870 X2 is manufactured by 55 nm process technology, and Radeon RX 570X - by 14 nm process technology.
    • Memory clock speed of Radeon RX 570X is 6150 MHz higher, than Mobility Radeon HD 3870 X2.

    Game benchmarks

    high / 1080p 6−7 9−10
    ultra / 1080p 4−5 5−6
    QHD / 1440p 0−1 0−1
    low / 720p 16−18 21−24
    medium / 1080p 8−9 10−12
    The average gaming FPS of Radeon RX 570X in Assassin's Creed Odyssey is 33% more, than Mobility Radeon HD 3870 X2.

    Full Specs

      Mobility Radeon HD 3870 X2 Radeon RX 570X
    Architecture RV6xx GCN 4.0
    Code name M88-XT CF Polaris 20
    Type Laptop Desktop
    Release date 1 September 2008 11 April 2018
    Pipelines 640 2048
    Core clock speed 660 MHz 1168 MHz
    Boost Clock 1244 MHz
    Transistor count 666 million 5,700 million
    Manufacturing process technology 55 nm 14 nm
    Texture fill rate 10.56 159.2
    Floating-point performance 2x 422.4 gflops 5,095 gflops
    Length 241 mm
    Memory bus width 256 Bit 256 Bit
    Memory clock speed 850 MHz 7000 MHz
    Memory bandwidth 54.4 GB/s 224.0 GB/s
    Shared memory -
    DirectX 10.1 (10_1) 12 (12_0)
    Shader Model 4.1 6.4
    OpenGL 3.3 4.6
    OpenCL N/A 2.0
    Vulkan N/A 1.2.131
    Laptop size large
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