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    GeForce GTX 660M vs Radeon R9 380X

    When comparing GeForce GTX 660M and Radeon R9 380X, 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 660M and Radeon R9 380X is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    GeForce GTX 660M Check Price
    Radeon R9 380X Check Price

    GeForce GTX 660M is a Laptop Graphics Card

    Note: GeForce GTX 660M 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 GeForce GTX 660M here:

    GeForce GTX 660M Laptops

    Main Specs

      GeForce GTX 660M Radeon R9 380X
    Power consumption (TDP) 50 Watt 190 Watt
    Interface MXM-B (3.0) PCIe 3.0 x16
    Memory type GDDR5 GDDR5
    Maximum RAM amount 2 GB 4 GB
    Display Connectors No outputs 2x DVI, 1x HDMI, 1x DisplayPort
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    • Radeon R9 380X has 280% more power consumption, than GeForce GTX 660M.
    • GeForce GTX 660M is connected by MXM-B (3.0), and Radeon R9 380X uses PCIe 3.0 x16 interface.
    • Radeon R9 380X has 2 GB more memory, than GeForce GTX 660M.
    • GeForce GTX 660M is used in Laptops, and Radeon R9 380X - in Desktops.
    • GeForce GTX 660M is build with Kepler architecture, and Radeon R9 380X - with GCN 3.0.
    • GeForce GTX 660M and Radeon R9 380X are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce GTX 660M is 1030 MHz higher, than Radeon R9 380X.

    Game benchmarks

    high / 1080p 6−7 35−40
    ultra / 1080p 4−5 21−24
    QHD / 1440p 0−1 16−18
    4K / 2160p − 10−11
    low / 720p 16−18 60−65
    medium / 1080p 8−9 40−45
    The average gaming FPS of Radeon R9 380X in Assassin's Creed Odyssey is 355% more, than GeForce GTX 660M.

    Full Specs

      GeForce GTX 660M Radeon R9 380X
    Architecture Kepler GCN 3.0
    Code name N13E-GE Antigua
    Type Laptop Desktop
    Release date 22 March 2012 19 November 2015
    Pipelines 384 2048
    Core clock speed 835 MHz
    Boost Clock 950 MHz 970 MHz
    Transistor count 1,270 million 5,000 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 30.4 billion/sec 124.2
    Floating-point performance 729.6 gflops 3,973 gflops
    Length 221 mm
    Memory bus width 128bit 256 Bit
    Memory clock speed 2000 MHz 970 MHz
    Memory bandwidth 64.0 GB/s 182.4 GB/s
    Shared memory -
    DirectX 12 API
    Shader Model 5.1 6.3
    OpenGL 4.5 4.5
    OpenCL 1.1 2.0
    Vulkan 1.1.126 +
    CUDA +
    Monero / XMR (CryptoNight) 0.58 kh/s
    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
    Laptop size large
    Optimus +
    Eyefinity +
    HD3D +
    PowerTune +
    TrueAudio +
    ZeroCore +
    Mantle +
    Design reference
    Bridgeless CrossFire +
    Number of Eyefinity displays 6
    DisplayPort support +
    CrossFire +
    VCE +
    DDMA audio +
    Decred / DCR (Decred) 0.89 Gh/s
    Ethereum / ETH (DaggerHashimoto) 20.63 Mh/s
    Zcash / ZEC (Equihash) 175 Sol/s
    Compute units 32
    Form factor full height / full length
    High bandwidth memory (HBM) -
    LiquidVR +
    FRTC +
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