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    Radeon R7 M340 vs Radeon RX 640

    When comparing Radeon R7 M340 and Radeon RX 640, 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 R7 M340 and Radeon RX 640 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    Radeon R7 M340 Check Price
    Radeon RX 640 Check Price

    Radeon R7 M340 and Radeon RX 640 are Laptop Graphics Cards

    Note: Radeon R7 M340 and Radeon RX 640 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 RX 640 here:

    Radeon R7 M340 Laptops
    Radeon RX 640 Laptops

    Main Specs

      Radeon R7 M340 Radeon RX 640
    Power consumption (TDP) 50 Watt
    Interface PCIe 3.0 x8 PCIe 3.0 x8
    Supplementary power connectors None None
    Memory type DDR3 GDDR5
    Maximum RAM amount 4 GB 4 GB
    Display Connectors No outputs 1x DVI, 1x HDMI, 1x DisplayPort
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    • Both video cards are using PCIe 3.0 x8 interface connection to a motherboard.
    • Radeon R7 M340 and Radeon RX 640 have maximum RAM of 4 GB.
    • Both cards are used in Laptops.
    • Radeon R7 M340 is build with GCN architecture, and Radeon RX 640 - with Polaris.
    • Core clock speed of Radeon RX 640 is 197 MHz higher, than Radeon R7 M340.
    • Radeon R7 M340 is manufactured by 28 nm process technology, and Radeon RX 640 - by 14 nm process technology.
    • Memory clock speed of Radeon RX 640 is 5000 MHz higher, than Radeon R7 M340.

    Game benchmarks

    high / 1080p 0−1 5−6
    ultra / 1080p − 3−4
    QHD / 1440p 0−1 2−3
    low / 720p 1−2 16−18
    medium / 1080p 0−1 7−8
    The average gaming FPS of Radeon RX 640 in Assassin's Creed Odyssey is 1600% more, than Radeon R7 M340.

    Full Specs

      Radeon R7 M340 Radeon RX 640
    Architecture GCN Polaris
    Code name Meso Pro DDR3 Polaris 12
    Type Laptop Laptop
    Release date 16 June 2015 12 August 2019
    Pipelines 320 640
    Core clock speed 1021 MHz 1218 MHz
    Boost Clock 1021 MHz 1218 MHz
    Transistor count 950 million 2,200 million
    Manufacturing process technology 28 nm 14 nm
    Texture fill rate 17.16 38.98
    Floating-point performance 549.1 gflops
    Memory bus width 128 Bit 64 Bit
    Memory clock speed 1000 MHz 6000 MHz
    Memory bandwidth 16 GB/s 112.0 GB/s
    Shared memory - -
    DirectX 12 (12_0)
    Shader Model 5.1 6.4
    OpenGL 4.4 4.6
    OpenCL Not Listed 2.0
    Vulkan + 1.2.131
    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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