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    GeForce GTX 660M vs Radeon R7 250X

    If you are going to buy a new graphics card and are choosing between GeForce GTX 660M and Radeon R7 250X, 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 R7 250X, check out specs charts below.
    GeForce GTX 660M Check Price
    Radeon R7 250X 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 R7 250X
    Power consumption (TDP) 50 Watt 80 Watt
    Interface MXM-B (3.0) PCIe 3.0 x16
    Supplementary power connectors 1 x 6-pin
    Memory type GDDR5 GDDR5
    Maximum RAM amount 2 GB 2 GB
    Display Connectors No outputs 1x DVI, 1x HDMI, 2x mini-DisplayPort
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    • Radeon R7 250X has 60% more power consumption, than GeForce GTX 660M.
    • GeForce GTX 660M is connected by MXM-B (3.0), and Radeon R7 250X uses PCIe 3.0 x16 interface.
    • GeForce GTX 660M and Radeon R7 250X have maximum RAM of 2 GB.
    • GeForce GTX 660M is used in Laptops, and Radeon R7 250X - in Desktops.
    • GeForce GTX 660M is build with Kepler architecture, and Radeon R7 250X - with GCN 1.0.
    • GeForce GTX 660M and Radeon R7 250X are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce GTX 660M is 375 MHz higher, than Radeon R7 250X.

    Game benchmarks

    high / 1080p 6−7 10−12
    ultra / 1080p 4−5 6−7
    QHD / 1440p 0−1 1−2
    low / 720p 16−18 24−27
    medium / 1080p 8−9 14−16
    The average gaming FPS of Radeon R7 250X in Assassin's Creed Odyssey is 55% more, than GeForce GTX 660M.

    Full Specs

      GeForce GTX 660M Radeon R7 250X
    Architecture Kepler GCN 1.0
    Code name N13E-GE Cape Verde
    Type Laptop Desktop
    Release date 22 March 2012 13 February 2014
    Pipelines 384 640
    Core clock speed 835 MHz
    Boost Clock 950 MHz 1000 MHz
    Transistor count 1,270 million 1,500 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 30.4 billion/sec 38.00
    Floating-point performance 729.6 gflops 1,216 gflops
    Length 210 mm
    Memory bus width 128bit 128 Bit
    Memory clock speed 2000 MHz 1625 MHz
    Memory bandwidth 64.0 GB/s 96 GB/s
    Shared memory -
    DirectX 12 API
    Shader Model 5.1 5.1
    OpenGL 4.5 4.6
    OpenCL 1.1 1.2
    Vulkan 1.1.126
    CUDA +
    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 152 Mh/s
    Laptop size large
    Optimus +
    Eyefinity +
    Design reference
    CrossFire +
    DDMA audio +
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