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    Mobility Radeon HD 3870 X2 vs Radeon Pro Vega 20

    If you are going to buy a new graphics card and are choosing between Mobility Radeon HD 3870 X2 and Radeon Pro Vega 20, 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 Pro Vega 20, check out specs charts below.
    Mobility Radeon HD 3870 X2 Check Price
    Radeon Pro Vega 20 Check Price

    Mobility Radeon HD 3870 X2 and Radeon Pro Vega 20 are Laptop Graphics Cards

    Note: Mobility Radeon HD 3870 X2 and Radeon Pro Vega 20 are only used in laptop graphics. They have 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 or Radeon Pro Vega 20 here:

    Mobility Radeon HD 3870 X2 Laptops
    Radeon Pro Vega 20 Laptops

    Main Specs

      Mobility Radeon HD 3870 X2 Radeon Pro Vega 20
    Power consumption (TDP) 110 Watt 100 Watt
    Interface PCIe 2.0 x16 PCIe 3.0 x16
    Supplementary power connectors 1x 6-pin + 1x 8-pin
    Memory type GDDR3 HBM2
    Maximum RAM amount 512 MB 4 GB
    Display Connectors No outputs No outputs
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    • Mobility Radeon HD 3870 X2 has 10% more power consumption, than Radeon Pro Vega 20.
    • Mobility Radeon HD 3870 X2 is connected by PCIe 2.0 x16, and Radeon Pro Vega 20 uses PCIe 3.0 x16 interface.
    • Mobility Radeon HD 3870 X2 has 508 GB more memory, than Radeon Pro Vega 20.
    • Mobility Radeon HD 3870 X2 is used in Laptops, and Radeon Pro Vega 20 - in Mobile workstations.
    • Mobility Radeon HD 3870 X2 is build with RV6xx architecture, and Radeon Pro Vega 20 - with Vega.
    • Core clock speed of Radeon Pro Vega 20 is 155 MHz higher, than Mobility Radeon HD 3870 X2.
    • Mobility Radeon HD 3870 X2 is manufactured by 55 nm process technology, and Radeon Pro Vega 20 - by 14 nm process technology.
    • Memory clock speed of Radeon Pro Vega 20 is 630 MHz higher, than Mobility Radeon HD 3870 X2.

    Game benchmarks

    high / 1080p 6−7 35−40
    ultra / 1080p 4−5 21−24
    QHD / 1440p 0−1 16−18
    4K / 2160p − 10−11
    low / 720p 16−18 60−65
    medium / 1080p 8−9 40−45
    The average gaming FPS of Radeon Pro Vega 20 in Assassin's Creed Odyssey is 355% more, than Mobility Radeon HD 3870 X2.

    Full Specs

      Mobility Radeon HD 3870 X2 Radeon Pro Vega 20
    Architecture RV6xx Vega
    Code name M88-XT CF Vega Mobile
    Type Laptop Mobile workstation
    Release date 1 September 2008 15 November 2018
    Pipelines 640 1280
    Core clock speed 660 MHz 815 MHz
    Boost Clock 1283 MHz
    Transistor count 666 million
    Manufacturing process technology 55 nm 14 nm
    Texture fill rate 10.56 102.6
    Floating-point performance 2x 422.4 gflops
    Memory bus width 256 Bit 1024 Bit
    Memory clock speed 850 MHz 1480 MHz
    Memory bandwidth 54.4 GB/s 189.4 GB/s
    Shared memory - -
    DirectX 10.1 (10_1) 12 (12_1)
    Shader Model 4.1 6.3
    OpenGL 3.3 4.6
    OpenCL N/A 2.0
    Vulkan N/A 1.2.131
    Laptop size large large
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