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    Mobility Radeon HD 3870 X2 vs Radeon R9 M290X

    When choosing between Mobility Radeon HD 3870 X2 and Radeon R9 M290X, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between Mobility Radeon HD 3870 X2 and Radeon R9 M290X.
    Mobility Radeon HD 3870 X2 Check Price
    Radeon R9 M290X Check Price

    Mobility Radeon HD 3870 X2 and Radeon R9 M290X are Laptop Graphics Cards

    Note: Mobility Radeon HD 3870 X2 and Radeon R9 M290X 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 R9 M290X here:

    Mobility Radeon HD 3870 X2 Laptops
    Radeon R9 M290X Laptops

    Main Specs

      Mobility Radeon HD 3870 X2 Radeon R9 M290X
    Power consumption (TDP) 110 Watt 100 Watt
    Interface PCIe 2.0 x16 PCIe 3.0 x16
    Supplementary power connectors None
    Memory type GDDR3 GDDR5
    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 R9 M290X.
    • Mobility Radeon HD 3870 X2 is connected by PCIe 2.0 x16, and Radeon R9 M290X uses PCIe 3.0 x16 interface.
    • Mobility Radeon HD 3870 X2 has 508 GB more memory, than Radeon R9 M290X.
    • Both cards are used in Laptops.
    • Mobility Radeon HD 3870 X2 is build with RV6xx architecture, and Radeon R9 M290X - with GCN.
    • Core clock speed of Radeon R9 M290X is 190 MHz higher, than Mobility Radeon HD 3870 X2.
    • Mobility Radeon HD 3870 X2 is manufactured by 55 nm process technology, and Radeon R9 M290X - by 28 nm process technology.
    • Memory clock speed of Radeon R9 M290X is 350 MHz higher, than Mobility Radeon HD 3870 X2.

    Game benchmarks

    high / 1080p 6−7 16−18
    ultra / 1080p 4−5 10−11
    QHD / 1440p 0−1 4−5
    4K / 2160p − 4−5
    low / 720p 16−18 30−35
    medium / 1080p 8−9 20−22
    The average gaming FPS of Radeon R9 M290X in Assassin's Creed Odyssey is 122% more, than Mobility Radeon HD 3870 X2.

    Full Specs

      Mobility Radeon HD 3870 X2 Radeon R9 M290X
    Architecture RV6xx GCN
    Code name M88-XT CF Neptune
    Type Laptop Laptop
    Release date 1 September 2008 7 January 2014
    Pipelines 640 1280
    Core clock speed 660 MHz 850 MHz
    Boost Clock 900 MHz
    Transistor count 666 million 2,800 million
    Manufacturing process technology 55 nm 28 nm
    Texture fill rate 10.56 72.00
    Floating-point performance 2x 422.4 gflops 2,304 gflops
    Memory bus width 256 Bit 256 Bit
    Memory clock speed 850 MHz 1200 MHz
    Memory bandwidth 54.4 GB/s 153.6 GB/s
    Shared memory - -
    DirectX 10.1 (10_1)
    Shader Model 4.1 5.1
    OpenGL 3.3 4.4
    OpenCL N/A Not Listed
    Vulkan N/A
    FreeSync +
    Bus support PCIe 3.0 x16
    Bitcoin / BTC (SHA256) 300 Mh/s
    Laptop size large large
    Eyefinity +
    HD3D +
    PowerTune +
    DualGraphics +
    ZeroCore +
    Switchable graphics +
    Mantle +
    Compute units 20
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