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    Mobility Radeon HD 4870 vs Radeon R7 M340

    When choosing between Mobility Radeon HD 4870 and Radeon R7 M340, 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 4870 and Radeon R7 M340.
    Mobility Radeon HD 4870 Check Price
    Radeon R7 M340 Check Price

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

    Note: Mobility Radeon HD 4870 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 or Radeon R7 M340 here:

    Mobility Radeon HD 4870 Laptops
    Radeon R7 M340 Laptops

    Main Specs

      Mobility Radeon HD 4870 Radeon R7 M340
    Interface PCIe 2.0 x16 PCIe 3.0 x8
    Supplementary power connectors None
    Memory type GDDR5 DDR3
    Maximum RAM amount 1 GB 4 GB
    Display Connectors No outputs No outputs
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    • Mobility Radeon HD 4870 is connected by PCIe 2.0 x16, and Radeon R7 M340 uses PCIe 3.0 x8 interface.
    • Radeon R7 M340 has 3 GB more memory, than Mobility Radeon HD 4870.
    • Both cards are used in Laptops.
    • Mobility Radeon HD 4870 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.
    • Mobility Radeon HD 4870 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.

    Game benchmarks

    high / 1080p 7−8 0−1
    ultra / 1080p 4−5 −
    QHD / 1440p 0−1 0−1
    low / 720p 16−18 1−2
    medium / 1080p 8−9 0−1
    The average gaming FPS of Mobility Radeon HD 4870 in Assassin's Creed Odyssey is 1600% more, than Radeon R7 M340.

    Full Specs

      Mobility Radeon HD 4870 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 800 320
    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 880.0 gflops 549.1 gflops
    Memory bus width 256 Bit 128 Bit
    Memory clock speed 888 MHz 1000 MHz
    Memory bandwidth 56.83 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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