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    Mobility Radeon HD 4870 X2 vs Radeon R9 380X

    In this comparison between Mobility Radeon HD 4870 X2 and Radeon R9 380X 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 380X will be their preference. Study the comparison tables below and make your choice.
    Mobility Radeon HD 4870 X2 Check Price
    Radeon R9 380X Check Price

    Mobility Radeon HD 4870 X2 is a Laptop Graphics Card

    Note: Mobility Radeon HD 4870 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 4870 X2 here:

    Mobility Radeon HD 4870 X2 Laptops

    Main Specs

      Mobility Radeon HD 4870 X2 Radeon R9 380X
    Power consumption (TDP) 190 Watt
    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 2x DVI, 1x HDMI, 1x DisplayPort
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    • Mobility Radeon HD 4870 X2 is connected by PCIe 2.0 x16, and Radeon R9 380X uses PCIe 3.0 x16 interface.
    • Radeon R9 380X has 2 GB more memory, than Mobility Radeon HD 4870 X2.
    • Mobility Radeon HD 4870 X2 is used in Laptops, and Radeon R9 380X - in Desktops.
    • Mobility Radeon HD 4870 X2 is build with Terascale 1 architecture, and Radeon R9 380X - with GCN 3.0.
    • Mobility Radeon HD 4870 X2 is manufactured by 55 nm process technology, and Radeon R9 380X - by 28 nm process technology.
    • Memory clock speed of Radeon R9 380X is 82 MHz higher, than Mobility Radeon HD 4870 X2.

    Game benchmarks

    high / 1080p 9−10 35−40
    ultra / 1080p 5−6 21−24
    QHD / 1440p 0−1 16−18
    4K / 2160p − 10−11
    low / 720p 21−24 60−65
    medium / 1080p 12−14 40−45
    The average gaming FPS of Radeon R9 380X in Assassin's Creed Odyssey is 241% more, than Mobility Radeon HD 4870 X2.

    Full Specs

      Mobility Radeon HD 4870 X2 Radeon R9 380X
    Architecture Terascale 1 GCN 3.0
    Code name M98-XT Antigua
    Type Laptop Desktop
    Release date 9 January 2009 19 November 2015
    Pipelines 1600 2048
    Core clock speed 550 MHz
    Boost Clock 970 MHz
    Transistor count 956 million 5,000 million
    Manufacturing process technology 55 nm 28 nm
    Texture fill rate 22.00 124.2
    Floating-point performance 2x 880.0 gflops 3,973 gflops
    Length 221 mm
    Memory bus width 256 Bit 256 Bit
    Memory clock speed 888 MHz 970 MHz
    Memory bandwidth 89.6 GB/s 182.4 GB/s
    Shared memory -
    DirectX 10.1 (10_1)
    Shader Model 4.1 6.3
    OpenGL 3.3 4.5
    OpenCL 1.1 2.0
    Vulkan N/A +
    Monero / XMR (CryptoNight) 0.58 kh/s
    FreeSync +
    Bus support PCIe 3.0
    HDMI +
    Laptop size large
    Eyefinity +
    HD3D +
    PowerTune +
    TrueAudio +
    ZeroCore +
    Mantle +
    Design reference
    Bridgeless CrossFire +
    Number of Eyefinity displays 6
    DisplayPort support +
    CrossFire +
    VCE +
    DDMA audio +
    Decred / DCR (Decred) 0.89 Gh/s
    Ethereum / ETH (DaggerHashimoto) 20.63 Mh/s
    Zcash / ZEC (Equihash) 175 Sol/s
    Compute units 32
    Form factor full height / full length
    High bandwidth memory (HBM) -
    LiquidVR +
    FRTC +
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