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    Radeon HD 7770M vs Radeon R7 M340

    When comparing Radeon HD 7770M and Radeon R7 M340, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between Radeon HD 7770M and Radeon R7 M340 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    Radeon HD 7770M Check Price
    Radeon R7 M340 Check Price

    Radeon HD 7770M and Radeon R7 M340 are Laptop Graphics Cards

    Note: Radeon HD 7770M 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 Radeon HD 7770M or Radeon R7 M340 here:

    Radeon HD 7770M Laptops
    Radeon R7 M340 Laptops

    Main Specs

      Radeon HD 7770M Radeon R7 M340
    Power consumption (TDP) 32 Watt
    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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    • Radeon HD 7770M 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 Radeon HD 7770M.
    • Both cards are used in Laptops.
    • Radeon HD 7770M and Radeon R7 M340 are build with GCN architecture.
    • Core clock speed of Radeon R7 M340 is 346 MHz higher, than Radeon HD 7770M.
    • Radeon HD 7770M and Radeon R7 M340 are manufactured by 28 nm process technology.
    • Memory clock speed of Radeon HD 7770M is 3000 MHz higher, than Radeon R7 M340.

    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 10−12 0−1
    The average gaming FPS of Radeon HD 7770M in Assassin's Creed Odyssey is 2100% more, than Radeon R7 M340.

    Full Specs

      Radeon HD 7770M Radeon R7 M340
    Architecture GCN GCN
    Code name Chelsea XT Meso Pro DDR3
    Type Laptop Laptop
    Release date 24 April 2012 16 June 2015
    Pipelines 512 320
    Core clock speed 675 MHz 1021 MHz
    Boost Clock 1021 MHz
    Transistor count 1,500 million 950 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 21.60 17.16
    Floating-point performance 691.2 gflops 549.1 gflops
    Memory bus width 128 Bit 128 Bit
    Memory clock speed 4000 MHz 1000 MHz
    Memory bandwidth 64 GB/s 16 GB/s
    Shared memory - -
    DirectX 12 (11_1)
    Shader Model 5.1 5.1
    OpenGL 4.6 4.4
    OpenCL 1.2 Not Listed
    Vulkan 1.2.131 +
    FreeSync +
    Bus support PCIe 3.0
    Bitcoin / BTC (SHA256) 74 Mh/s
    Laptop size medium sized
    Eyefinity +
    HD3D +
    PowerTune +
    DualGraphics +
    ZeroCore +
    Switchable graphics +
    Mantle +
    Compute units 6
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