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    GeForce GTX 660 vs Radeon Pro Duo

    When comparing GeForce GTX 660 and Radeon Pro Duo, 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 Pro Duo 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 Pro Duo Check Price

    Main Specs

      GeForce GTX 660 Radeon Pro Duo
    Power consumption (TDP) 140 Watt 350 Watt
    Interface PCIe 3.0 x16 PCIe 3.0 x16
    Supplementary power connectors One 6-pin 3x 8-pin
    Memory type GDDR5 High Bandwidth Memory (HBM)
    Maximum RAM amount 2 GB 8 GB
    Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort 1x HDMI, 3x DisplayPort
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    • Radeon Pro Duo has 150% more power consumption, than GeForce GTX 660.
    • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
    • Radeon Pro Duo has 6 GB more memory, than GeForce GTX 660.
    • Both cards are used in Desktops.
    • GeForce GTX 660 is build with Kepler architecture, and Radeon Pro Duo - with GCN 3.0.
    • GeForce GTX 660 and Radeon Pro Duo are manufactured by 28 nm process technology.
    • Radeon Pro Duo is 268 mm longer, than GeForce GTX 660.
    • Memory clock speed of Radeon Pro Duo is 494 MHz higher, than GeForce GTX 660.

    Game benchmarks

    high / 1080p 20−22 50−55
    ultra / 1080p 12−14 30−35
    QHD / 1440p 6−7 27−30
    4K / 2160p 5−6 14−16
    low / 720p 40−45 75−80
    medium / 1080p 24−27 60−65
    The average gaming FPS of Radeon Pro Duo in Assassin's Creed Odyssey is 131% more, than GeForce GTX 660.

    Full Specs

      GeForce GTX 660 Radeon Pro Duo
    Architecture Kepler GCN 3.0
    Code name GK106 Capsaicin
    Type Desktop Workstation
    Release date 6 September 2012 26 April 2016
    Pipelines 960 4096
    Core clock speed 980 MHz
    Boost Clock 1033 MHz 1000 MHz
    Transistor count 2,540 million 8,900 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 78.4 billion/sec 256.0
    Floating-point performance 1,981 gflops 2x 8,192 gflops
    Length 9.5" (24.1 cm) 277 mm
    Memory bus width 192-bit GDDR5 4096 Bit
    Memory clock speed 6.0 GB/s 500 MHz
    Memory bandwidth 144.2 GB/s 512 GB/s
    DirectX 12 (11_0)
    Shader Model 5.1 6.0
    OpenGL 4.3 4.5
    OpenCL 1.2 2.0
    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 809 Mh/s
    Eyefinity +
    HD3D +
    PowerTune +
    TrueAudio +
    ZeroCore +
    Mantle +
    Design reference
    Number of Eyefinity displays 6
    DisplayPort support +
    CrossFire +
    VCE +
    Compute units 128
    AppAcceleration +
    LiquidVR +
    TressFX +
    UVD +
    Enduro +
    FRTC +
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