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    Mobility Radeon HD 4870 X2 vs Radeon R9 M385X

    In this comparison between Mobility Radeon HD 4870 X2 and Radeon R9 M385X you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people Mobility Radeon HD 4870 X2 will be the best choice, for others Radeon R9 M385X will be their preference. Study the comparison tables below and make your choice.
    Mobility Radeon HD 4870 X2 Check Price
    Radeon R9 M385X Check Price

    Mobility Radeon HD 4870 X2 and Radeon R9 M385X are Laptop Graphics Cards

    Note: Mobility Radeon HD 4870 X2 and Radeon R9 M385X 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 4870 X2 or Radeon R9 M385X here:

    Mobility Radeon HD 4870 X2 Laptops
    Radeon R9 M385X Laptops

    Main Specs

      Mobility Radeon HD 4870 X2 Radeon R9 M385X
    Interface PCIe 2.0 x16 PCIe 3.0 x16
    Memory type GDDR3, GDDR5 GDDR5
    Maximum RAM amount 2 GB 4 GB
    Display Connectors No outputs No outputs
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    • Mobility Radeon HD 4870 X2 is connected by PCIe 2.0 x16, and Radeon R9 M385X uses PCIe 3.0 x16 interface.
    • Radeon R9 M385X has 2 GB more memory, than Mobility Radeon HD 4870 X2.
    • Both cards are used in Laptops.
    • Mobility Radeon HD 4870 X2 is build with Terascale 1 architecture, and Radeon R9 M385X - with GCN.
    • Core clock speed of Radeon R9 M385X is 550 MHz higher, than Mobility Radeon HD 4870 X2.
    • Mobility Radeon HD 4870 X2 is manufactured by 55 nm process technology, and Radeon R9 M385X - by 28 nm process technology.
    • Memory clock speed of Radeon R9 M385X is 612 MHz higher, than Mobility Radeon HD 4870 X2.

    Game benchmarks

    high / 1080p 9−10 8−9
    ultra / 1080p 5−6 5−6
    QHD / 1440p 0−1 0−1
    low / 720p 21−24 18−20
    medium / 1080p 12−14 10−11
    The average gaming FPS of Mobility Radeon HD 4870 X2 in Assassin's Creed Odyssey is 20% more, than Radeon R9 M385X.

    Full Specs

      Mobility Radeon HD 4870 X2 Radeon R9 M385X
    Architecture Terascale 1 GCN
    Code name M98-XT Strato-XT-M3
    Type Laptop Laptop
    Release date 9 January 2009 16 June 2015
    Pipelines 1600 896
    Core clock speed 550 MHz 1100 MHz
    Boost Clock 1100 MHz
    Transistor count 956 million 2,080 million
    Manufacturing process technology 55 nm 28 nm
    Texture fill rate 22.00 61.60
    Floating-point performance 2x 880.0 gflops 1,971 gflops
    Memory bus width 256 Bit 128 Bit
    Memory clock speed 888 MHz 1500 MHz
    Memory bandwidth 89.6 GB/s 76.8 GB/s
    Shared memory - -
    DirectX 10.1 (10_1)
    Shader Model 4.1 6.3
    OpenGL 3.3 4.4
    OpenCL 1.1 Not Listed
    Vulkan N/A
    FreeSync +
    Bus support PCIe 3.0
    Laptop size large large
    Eyefinity +
    HD3D +
    PowerTune +
    DualGraphics +
    ZeroCore +
    Switchable graphics +
    Mantle +
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