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    GeForce GTX 660M vs Radeon HD 4770

    If you are going to buy a new graphics card and are choosing between GeForce GTX 660M and Radeon HD 4770, 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 HD 4770, check out specs charts below.
    GeForce GTX 660M Check Price
    Radeon HD 4770

    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 HD 4770
    Power consumption (TDP) 50 Watt 80 Watt
    Interface MXM-B (3.0) PCIe 2.0 x16
    Supplementary power connectors 1x 6-pin
    Memory type GDDR5 GDDR5
    Maximum RAM amount 2 GB 512 MB
    Display Connectors No outputs 2x DVI, 1x S-Video
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    • Radeon HD 4770 has 60% more power consumption, than GeForce GTX 660M.
    • GeForce GTX 660M is connected by MXM-B (3.0), and Radeon HD 4770 uses PCIe 2.0 x16 interface.
    • Radeon HD 4770 has 510 GB more memory, than GeForce GTX 660M.
    • GeForce GTX 660M is used in Laptops, and Radeon HD 4770 - in Desktops.
    • GeForce GTX 660M is build with Kepler architecture, and Radeon HD 4770 - with TeraScale.
    • Core clock speed of GeForce GTX 660M is 85 MHz higher, than Radeon HD 4770.
    • GeForce GTX 660M is manufactured by 28 nm process technology, and Radeon HD 4770 - by 40 nm process technology.
    • Memory clock speed of Radeon HD 4770 is 1200 MHz higher, than GeForce GTX 660M.

    Game benchmarks

    high / 1080p 6−7 1−2
    ultra / 1080p 4−5 0−1
    QHD / 1440p 0−1 0−1
    low / 720p 16−18 10−12
    medium / 1080p 8−9 2−3
    The average gaming FPS of GeForce GTX 660M in Assassin's Creed Odyssey is 100% more, than Radeon HD 4770.

    Full Specs

      GeForce GTX 660M Radeon HD 4770
    Architecture Kepler TeraScale
    Code name N13E-GE RV740
    Type Laptop Desktop
    Release date 22 March 2012 28 April 2009
    Pipelines 384 640
    Core clock speed 835 MHz 750 MHz
    Boost Clock 950 MHz
    Transistor count 1,270 million 826 million
    Manufacturing process technology 28 nm 40 nm
    Texture fill rate 30.4 billion/sec 24.00
    Floating-point performance 729.6 gflops 960.0 gflops
    Length 203 mm
    Memory bus width 128bit 128 Bit
    Memory clock speed 2000 MHz 3200 MHz
    Memory bandwidth 64.0 GB/s 51.2 GB/s
    Shared memory -
    DirectX 12 API 10.1 (10_1)
    Shader Model 5.1 4.1
    OpenGL 4.5 3.3
    OpenCL 1.1 1.1
    Vulkan 1.1.126 N/A
    CUDA +
    CUDA cores 384
    Bus support PCI Express 2.0, PCI Express 3.0
    SLI options +
    HDMI +
    HDCP +
    Maximum VGA resolution Up to 2048x1536
    Bitcoin / BTC (SHA256) 36 Mh/s
    Laptop size large
    Optimus +
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