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    Radeon R7 M340 vs Radeon R9 M280X

    If you are going to buy a new graphics card and are choosing between Radeon R7 M340 and Radeon R9 M280X, 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 Radeon R7 M340 stacks up against Radeon R9 M280X, check out specs charts below.
    Radeon R7 M340 Check Price
    Radeon R9 M280X Check Price

    Radeon R7 M340 and Radeon R9 M280X are Laptop Graphics Cards

    Note: Radeon R7 M340 and Radeon R9 M280X 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 Radeon R7 M340 or Radeon R9 M280X here:

    Radeon R7 M340 Laptops
    Radeon R9 M280X Laptops

    Main Specs

      Radeon R7 M340 Radeon R9 M280X
    Interface PCIe 3.0 x8 PCIe 3.0 x16
    Supplementary power connectors None
    Memory type DDR3 Not Listed
    Maximum RAM amount 4 GB
    Display Connectors No outputs No outputs
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    • Radeon R7 M340 is connected by PCIe 3.0 x8, and Radeon R9 M280X uses PCIe 3.0 x16 interface.
    • Both cards are used in Laptops.
    • Radeon R7 M340 and Radeon R9 M280X are build with GCN architecture.
    • Core clock speed of Radeon R7 M340 is 121 MHz higher, than Radeon R9 M280X.
    • Radeon R7 M340 and Radeon R9 M280X are manufactured by 28 nm process technology.

    Game benchmarks

    high / 1080p 0−1 2−3
    ultra / 1080p − 1−2
    QHD / 1440p 0−1 0−1
    low / 720p 1−2 14−16
    medium / 1080p 0−1 4−5
    The average gaming FPS of Radeon R9 M280X in Assassin's Creed Odyssey is 1400% more, than Radeon R7 M340.

    Full Specs

      Radeon R7 M340 Radeon R9 M280X
    Architecture GCN GCN
    Code name Meso Pro DDR3 Saturn XT
    Type Laptop Laptop
    Release date 16 June 2015 1 February 2015
    Pipelines 320 896
    Core clock speed 1021 MHz 900 MHz
    Boost Clock 1021 MHz
    Transistor count 950 million 2,080 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 17.16 61.60
    Floating-point performance 549.1 gflops 1,792 gflops
    Memory bus width 128 Bit
    Memory clock speed 1000 MHz
    Memory bandwidth 16 GB/s 96 GB/s
    Shared memory - -
    Shader Model 5.1 6.3
    OpenGL 4.4 4.4
    OpenCL Not Listed Not Listed
    Vulkan +
    FreeSync + +
    Bus support PCIe 3.0 Not Listed
    Bitcoin / BTC (SHA256) 74 Mh/s
    Laptop size large
    Eyefinity +
    HD3D + +
    PowerTune + +
    DualGraphics + +
    ZeroCore + +
    Switchable graphics + +
    Mantle + +
    Compute units 6
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