Subscribe to our YouTube channel ×

    GeForce GTX 660M vs Radeon R7 M340

    If you are going to buy a new graphics card and are choosing between GeForce GTX 660M and Radeon R7 M340, 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 GeForce GTX 660M stacks up against Radeon R7 M340, check out specs charts below.
    GeForce GTX 660M Check Price
    Radeon R7 M340 Check Price

    GeForce GTX 660M and Radeon R7 M340 are Laptop Graphics Cards

    Note: GeForce GTX 660M 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 GeForce GTX 660M or Radeon R7 M340 here:

    GeForce GTX 660M Laptops
    Radeon R7 M340 Laptops

    Main Specs

      GeForce GTX 660M Radeon R7 M340
    Power consumption (TDP) 50 Watt
    Interface MXM-B (3.0) PCIe 3.0 x8
    Supplementary power connectors None
    Memory type GDDR5 DDR3
    Maximum RAM amount 2 GB 4 GB
    Display Connectors No outputs No outputs
      Check Price Check Price
    • GeForce GTX 660M is connected by MXM-B (3.0), and Radeon R7 M340 uses PCIe 3.0 x8 interface.
    • Radeon R7 M340 has 2 GB more memory, than GeForce GTX 660M.
    • Both cards are used in Laptops.
    • GeForce GTX 660M is build with Kepler architecture, and Radeon R7 M340 - with GCN.
    • Core clock speed of Radeon R7 M340 is 186 MHz higher, than GeForce GTX 660M.
    • GeForce GTX 660M and Radeon R7 M340 are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce GTX 660M is 1000 MHz higher, than Radeon R7 M340.

    Game benchmarks

    high / 1080p 6−7 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 GeForce GTX 660M in Assassin's Creed Odyssey is 1600% more, than Radeon R7 M340.

    Full Specs

      GeForce GTX 660M Radeon R7 M340
    Architecture Kepler GCN
    Code name N13E-GE Meso Pro DDR3
    Type Laptop Laptop
    Release date 22 March 2012 16 June 2015
    Pipelines 384 320
    Core clock speed 835 MHz 1021 MHz
    Boost Clock 950 MHz 1021 MHz
    Transistor count 1,270 million 950 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 30.4 billion/sec 17.16
    Floating-point performance 729.6 gflops 549.1 gflops
    Memory bus width 128bit 128 Bit
    Memory clock speed 2000 MHz 1000 MHz
    Memory bandwidth 64.0 GB/s 16 GB/s
    Shared memory - -
    DirectX 12 API
    Shader Model 5.1 5.1
    OpenGL 4.5 4.4
    OpenCL 1.1 Not Listed
    Vulkan 1.1.126 +
    CUDA +
    FreeSync +
    CUDA cores 384
    Bus support PCI Express 2.0, PCI Express 3.0 PCIe 3.0
    SLI options +
    HDMI +
    HDCP +
    Maximum VGA resolution Up to 2048x1536
    Bitcoin / BTC (SHA256) 36 Mh/s 74 Mh/s
    Laptop size large
    Optimus +
    Eyefinity +
    HD3D +
    PowerTune +
    DualGraphics +
    ZeroCore +
    Switchable graphics +
    Mantle +
    Compute units 6
      Check Price Check Price

    Similar compares