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    Mobility Radeon HD 3870 X2 vs Radeon R7 M380

    If you are going to buy a new graphics card and are choosing between Mobility Radeon HD 3870 X2 and Radeon R7 M380, 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 R7 M380, check out specs charts below.
    Mobility Radeon HD 3870 X2 Check Price
    Radeon R7 M380 Check Price

    Mobility Radeon HD 3870 X2 and Radeon R7 M380 are Laptop Graphics Cards

    Note: Mobility Radeon HD 3870 X2 and Radeon R7 M380 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 R7 M380 here:

    Mobility Radeon HD 3870 X2 Laptops
    Radeon R7 M380 Laptops

    Main Specs

      Mobility Radeon HD 3870 X2 Radeon R7 M380
    Power consumption (TDP) 110 Watt
    Interface PCIe 2.0 x16 PCIe 3.0 x16
    Memory type GDDR3 DDR3
    Maximum RAM amount 512 MB 4 GB
    Display Connectors No outputs No outputs
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    • Mobility Radeon HD 3870 X2 is connected by PCIe 2.0 x16, and Radeon R7 M380 uses PCIe 3.0 x16 interface.
    • Mobility Radeon HD 3870 X2 has 508 GB more memory, than Radeon R7 M380.
    • Both cards are used in Laptops.
    • Mobility Radeon HD 3870 X2 is build with RV6xx architecture, and Radeon R7 M380 - with GCN.
    • Core clock speed of Radeon R7 M380 is 255 MHz higher, than Mobility Radeon HD 3870 X2.
    • Mobility Radeon HD 3870 X2 is manufactured by 55 nm process technology, and Radeon R7 M380 - by 28 nm process technology.
    • Memory clock speed of Radeon R7 M380 is 150 MHz higher, than Mobility Radeon HD 3870 X2.

    Game benchmarks

    high / 1080p 6−7 6−7
    ultra / 1080p 4−5 4−5
    QHD / 1440p 0−1 0−1
    low / 720p 16−18 16−18
    medium / 1080p 8−9 8−9
    Mobility Radeon HD 3870 X2 and Radeon R7 M380 have the same average FPS in Assassin's Creed Odyssey.

    Full Specs

      Mobility Radeon HD 3870 X2 Radeon R7 M380
    Architecture RV6xx GCN
    Code name M88-XT CF Tropo
    Type Laptop Laptop
    Release date 1 September 2008 7 May 2015
    Pipelines 640 640
    Core clock speed 660 MHz 915 MHz
    Boost Clock 915 MHz
    Transistor count 666 million 1,500 million
    Manufacturing process technology 55 nm 28 nm
    Texture fill rate 10.56 36.60
    Floating-point performance 2x 422.4 gflops 1,171 gflops
    Memory bus width 256 Bit 128 Bit
    Memory clock speed 850 MHz 1000 MHz
    Memory bandwidth 54.4 GB/s 32 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
    Laptop size large medium sized
    Eyefinity +
    HD3D +
    PowerTune +
    DualGraphics +
    ZeroCore +
    Switchable graphics +
    Mantle +
    Compute units 10
    AppAcceleration +
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