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    GeForce GTX 660 vs Radeon R9 M275

    When comparing GeForce GTX 660 and Radeon R9 M275, 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 GeForce GTX 660 and Radeon R9 M275 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    GeForce GTX 660 Check Price
    Radeon R9 M275 Check Price

    Radeon R9 M275 is a Laptop Graphics Card

    Note: Radeon R9 M275 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 R9 M275 here:

    Radeon R9 M275 Laptops

    Main Specs

      GeForce GTX 660 Radeon R9 M275
    Power consumption (TDP) 140 Watt
    Interface PCIe 3.0 x16 PCIe 3.0 x16
    Supplementary power connectors One 6-pin
    Memory type GDDR5 GDDR5
    Maximum RAM amount 2 GB 4 GB
    Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort No outputs
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    • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
    • Radeon R9 M275 has 2 GB more memory, than GeForce GTX 660.
    • GeForce GTX 660 is used in Desktops, and Radeon R9 M275 - in Laptops.
    • GeForce GTX 660 is build with Kepler architecture, and Radeon R9 M275 - with GCN.
    • Core clock speed of GeForce GTX 660 is 55 MHz higher, than Radeon R9 M275.
    • GeForce GTX 660 and Radeon R9 M275 are manufactured by 28 nm process technology.
    • Memory clock speed of Radeon R9 M275 is 4494 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 12−14
    medium / 1080p 24−27 3−4
    The average gaming FPS of GeForce GTX 660 in Assassin's Creed Odyssey is 325% more, than Radeon R9 M275.

    Full Specs

      GeForce GTX 660 Radeon R9 M275
    Architecture Kepler GCN
    Code name GK106 Venus
    Type Desktop Laptop
    Release date 6 September 2012 1 August 2014
    Pipelines 960 640
    Core clock speed 980 MHz 925 MHz
    Boost Clock 1033 MHz 925 MHz
    Transistor count 2,540 million 1,500 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 78.4 billion/sec 37.00
    Floating-point performance 1,981 gflops 1,184 gflops
    Length 9.5" (24.1 cm)
    Memory bus width 192-bit GDDR5 128 Bit
    Memory clock speed 6.0 GB/s 4500 MHz
    Memory bandwidth 144.2 GB/s 64 GB/s
    Shared memory -
    DirectX 12 (11_0) 12 (11_1)
    Shader Model 5.1 5.1
    OpenGL 4.3 4.6
    OpenCL 1.2 1.2
    Vulkan 1.1.126 1.2.131
    CUDA +
    CUDA cores 960
    Bus support PCI Express 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 122 Mh/s
    Laptop size large
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