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    GeForce GTX 660 vs Radeon R7 M340

    In this comparison between GeForce GTX 660 and Radeon R7 M340 you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce GTX 660 will be the best choice, for others Radeon R7 M340 will be their preference. Study the comparison tables below and make your choice.
    GeForce GTX 660 Check Price
    Radeon R7 M340 Check Price

    Radeon R7 M340 is a Laptop Graphics Card

    Note: Radeon R7 M340 is only used in laptop graphics. It has 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 here:

    Radeon R7 M340 Laptops

    Main Specs

      GeForce GTX 660 Radeon R7 M340
    Power consumption (TDP) 140 Watt
    Interface PCIe 3.0 x16 PCIe 3.0 x8
    Supplementary power connectors One 6-pin None
    Memory type GDDR5 DDR3
    Maximum RAM amount 2 GB 4 GB
    Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort No outputs
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    • GeForce GTX 660 is connected by PCIe 3.0 x16, and Radeon R7 M340 uses PCIe 3.0 x8 interface.
    • Radeon R7 M340 has 2 GB more memory, than GeForce GTX 660.
    • GeForce GTX 660 is used in Desktops, and Radeon R7 M340 - in Laptops.
    • GeForce GTX 660 is build with Kepler architecture, and Radeon R7 M340 - with GCN.
    • Core clock speed of Radeon R7 M340 is 41 MHz higher, than GeForce GTX 660.
    • GeForce GTX 660 and Radeon R7 M340 are manufactured by 28 nm process technology.
    • Memory clock speed of Radeon R7 M340 is 994 MHz higher, than GeForce GTX 660.

    Game benchmarks

    high / 1080p 20−22 0−1
    ultra / 1080p 12−14 −
    QHD / 1440p 6−7 0−1
    4K / 2160p 5−6 −
    low / 720p 40−45 1−2
    medium / 1080p 24−27 0−1
    The average gaming FPS of GeForce GTX 660 in Assassin's Creed Odyssey is 4100% more, than Radeon R7 M340.

    Full Specs

      GeForce GTX 660 Radeon R7 M340
    Architecture Kepler GCN
    Code name GK106 Meso Pro DDR3
    Type Desktop Laptop
    Release date 6 September 2012 16 June 2015
    Pipelines 960 320
    Core clock speed 980 MHz 1021 MHz
    Boost Clock 1033 MHz 1021 MHz
    Transistor count 2,540 million 950 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 78.4 billion/sec 17.16
    Floating-point performance 1,981 gflops 549.1 gflops
    Length 9.5" (24.1 cm)
    Memory bus width 192-bit GDDR5 128 Bit
    Memory clock speed 6.0 GB/s 1000 MHz
    Memory bandwidth 144.2 GB/s 16 GB/s
    Shared memory -
    DirectX 12 (11_0)
    Shader Model 5.1 5.1
    OpenGL 4.3 4.4
    OpenCL 1.2 Not Listed
    Vulkan 1.1.126 +
    CUDA +
    FreeSync +
    CUDA cores 960
    Bus support PCI Express 3.0 PCIe 3.0
    Height 4.376" (11.1 cm)
    SLI options +
    Multi monitor support 4 displays
    HDMI +
    HDCP +
    Maximum VGA resolution 2048x1536
    Audio input for HDMI Internal
    3D Blu-Ray +
    3D Gaming +
    3D Vision +
    Bitcoin / BTC (SHA256) 66 Mh/s 74 Mh/s
    Eyefinity +
    HD3D +
    PowerTune +
    DualGraphics +
    ZeroCore +
    Switchable graphics +
    Mantle +
    Compute units 6
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