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    Mobility Radeon HD 4870 X2 vs Radeon R7 M340

    In this comparison between Mobility Radeon HD 4870 X2 and Radeon R7 M340 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 R7 M340 will be their preference. Study the comparison tables below and make your choice.
    Mobility Radeon HD 4870 X2 Check Price
    Radeon R7 M340 Check Price

    Mobility Radeon HD 4870 X2 and Radeon R7 M340 are Laptop Graphics Cards

    Note: Mobility Radeon HD 4870 X2 and Radeon R7 M340 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 R7 M340 here:

    Mobility Radeon HD 4870 X2 Laptops
    Radeon R7 M340 Laptops

    Main Specs

      Mobility Radeon HD 4870 X2 Radeon R7 M340
    Interface PCIe 2.0 x16 PCIe 3.0 x8
    Supplementary power connectors None
    Memory type GDDR3, GDDR5 DDR3
    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 R7 M340 uses PCIe 3.0 x8 interface.
    • Radeon R7 M340 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 R7 M340 - with GCN.
    • Core clock speed of Radeon R7 M340 is 471 MHz higher, than Mobility Radeon HD 4870 X2.
    • Mobility Radeon HD 4870 X2 is manufactured by 55 nm process technology, and Radeon R7 M340 - by 28 nm process technology.
    • Memory clock speed of Radeon R7 M340 is 112 MHz higher, than Mobility Radeon HD 4870 X2.

    Game benchmarks

    high / 1080p 9−10 0−1
    ultra / 1080p 5−6 −
    QHD / 1440p 0−1 0−1
    low / 720p 21−24 1−2
    medium / 1080p 12−14 0−1
    The average gaming FPS of Mobility Radeon HD 4870 X2 in Assassin's Creed Odyssey is 2100% more, than Radeon R7 M340.

    Full Specs

      Mobility Radeon HD 4870 X2 Radeon R7 M340
    Architecture Terascale 1 GCN
    Code name M98-XT Meso Pro DDR3
    Type Laptop Laptop
    Release date 9 January 2009 16 June 2015
    Pipelines 1600 320
    Core clock speed 550 MHz 1021 MHz
    Boost Clock 1021 MHz
    Transistor count 956 million 950 million
    Manufacturing process technology 55 nm 28 nm
    Texture fill rate 22.00 17.16
    Floating-point performance 2x 880.0 gflops 549.1 gflops
    Memory bus width 256 Bit 128 Bit
    Memory clock speed 888 MHz 1000 MHz
    Memory bandwidth 89.6 GB/s 16 GB/s
    Shared memory - -
    DirectX 10.1 (10_1)
    Shader Model 4.1 5.1
    OpenGL 3.3 4.4
    OpenCL 1.1 Not Listed
    Vulkan N/A +
    FreeSync +
    Bus support PCIe 3.0
    Bitcoin / BTC (SHA256) 74 Mh/s
    Laptop size large
    Eyefinity +
    HD3D +
    PowerTune +
    DualGraphics +
    ZeroCore +
    Switchable graphics +
    Mantle +
    Compute units 6
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