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    GeForce GTX 660M vs Radeon HD 4870 X2

    If you are going to buy a new graphics card and are choosing between GeForce GTX 660M and Radeon HD 4870 X2, 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 4870 X2, check out specs charts below.
    GeForce GTX 660M Check Price
    Radeon HD 4870 X2

    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 4870 X2
    Power consumption (TDP) 50 Watt 286 Watt
    Interface MXM-B (3.0) PCIe 2.0 x16
    Supplementary power connectors 1x 6-pin + 1x 8-pin
    Memory type GDDR5 GDDR5
    Maximum RAM amount 2 GB 1 GB
    Display Connectors No outputs 2x DVI, 1x S-Video
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    • Radeon HD 4870 X2 has 472% more power consumption, than GeForce GTX 660M.
    • GeForce GTX 660M is connected by MXM-B (3.0), and Radeon HD 4870 X2 uses PCIe 2.0 x16 interface.
    • GeForce GTX 660M has 1 GB more memory, than Radeon HD 4870 X2.
    • GeForce GTX 660M is used in Laptops, and Radeon HD 4870 X2 - in Desktops.
    • GeForce GTX 660M is build with Kepler architecture, and Radeon HD 4870 X2 - with TeraScale.
    • Core clock speed of GeForce GTX 660M is 135 MHz higher, than Radeon HD 4870 X2.
    • GeForce GTX 660M is manufactured by 28 nm process technology, and Radeon HD 4870 X2 - by 55 nm process technology.
    • Memory clock speed of Radeon HD 4870 X2 is 1600 MHz higher, than GeForce GTX 660M.

    Game benchmarks

    high / 1080p 6−7 3−4
    ultra / 1080p 4−5 1−2
    QHD / 1440p 0−1 0−1
    low / 720p 16−18 14−16
    medium / 1080p 8−9 6−7
    The average gaming FPS of GeForce GTX 660M in Assassin's Creed Odyssey is 50% more, than Radeon HD 4870 X2.

    Full Specs

      GeForce GTX 660M Radeon HD 4870 X2
    Architecture Kepler TeraScale
    Code name N13E-GE R700
    Type Laptop Desktop
    Release date 22 March 2012 12 August 2008
    Pipelines 384 800
    Core clock speed 835 MHz 700 MHz
    Boost Clock 950 MHz
    Transistor count 1,270 million 956 million
    Manufacturing process technology 28 nm 55 nm
    Texture fill rate 30.4 billion/sec 28.00
    Floating-point performance 729.6 gflops 2x 1,120.0 gflops
    Length 267 mm
    Memory bus width 128bit 256 Bit
    Memory clock speed 2000 MHz 3600 MHz
    Memory bandwidth 64.0 GB/s 115.2 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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