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    GeForce GTX 675M SLI vs Radeon R9 M390X

    If you are going to buy a new graphics card and are choosing between GeForce GTX 675M SLI and Radeon R9 M390X, 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 675M SLI stacks up against Radeon R9 M390X, check out specs charts below.
    GeForce GTX 675M SLI Check Price
    Radeon R9 M390X Check Price

    GeForce GTX 675M SLI and Radeon R9 M390X are Laptop Graphics Cards

    Note: GeForce GTX 675M SLI and Radeon R9 M390X are only used in laptop graphics. They have 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 675M SLI or Radeon R9 M390X here:

    GeForce GTX 675M SLI Laptops
    Radeon R9 M390X Laptops

    Main Specs

      GeForce GTX 675M SLI Radeon R9 M390X
    Power consumption (TDP) 2x 100 Watt 100 Watt
    Interface PCIe 3.0 x16
    Supplementary power connectors None
    Memory type GDDR5 GDDR5
    Maximum RAM amount 4 GB
    Display Connectors No outputs
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    • Radeon R9 M390X has 4900% more power consumption, than GeForce GTX 675M SLI.
    • Both cards are used in Laptops.
    • GeForce GTX 675M SLI is build with Fermi architecture, and Radeon R9 M390X - with GCN 3.
    • Core clock speed of Radeon R9 M390X is 103 MHz higher, than GeForce GTX 675M SLI.
    • GeForce GTX 675M SLI is manufactured by 40 nm process technology, and Radeon R9 M390X - by 28 nm process technology.

    Game benchmarks

    high / 1080p 18−20 21−24
    ultra / 1080p 10−12 12−14
    QHD / 1440p 5−6 8−9
    4K / 2160p 4−5 5−6
    low / 720p 35−40 40−45
    medium / 1080p 24−27 27−30
    The average gaming FPS of Radeon R9 M390X in Assassin's Creed Odyssey is 17% more, than GeForce GTX 675M SLI.

    Full Specs

      GeForce GTX 675M SLI Radeon R9 M390X
    Architecture Fermi GCN 3
    Code name N12E-GTX2 Amethyst (XT) / Tonga
    Type Laptop Laptop
    Release date 6 January 2011 9 June 2015
    Pipelines 768 2048
    Core clock speed 620 MHz 723 MHz
    Transistor count 5,000 million
    Manufacturing process technology 40 nm 28 nm
    Texture fill rate 92.54
    Floating-point performance 2,961 gflops
    Memory bus width 256 Bit 256 Bit
    Memory clock speed 3000 MHz
    Memory bandwidth 160.0 GB/s
    Shared memory - -
    DirectX DirectX 11, Shader 5.0
    Shader Model 6.3
    OpenGL 4.4
    OpenCL Not Listed
    Vulkan +
    CUDA +
    FreeSync +
    Bus support PCIe 3.0
    SLI options +
    Laptop size large large
    Optimus +
    Eyefinity +
    HD3D +
    PowerTune +
    DualGraphics +
    ZeroCore +
    Switchable graphics +
    Mantle +
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