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    GeForce GTX 675M SLI vs Radeon R9 390X

    If you are going to buy a new graphics card and are choosing between GeForce GTX 675M SLI and Radeon R9 390X, 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 390X, check out specs charts below.
    GeForce GTX 675M SLI Check Price
    Radeon R9 390X Check Price

    GeForce GTX 675M SLI is a Laptop Graphics Card

    Note: GeForce GTX 675M SLI 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 675M SLI here:

    GeForce GTX 675M SLI Laptops

    Main Specs

      GeForce GTX 675M SLI Radeon R9 390X
    Power consumption (TDP) 2x 100 Watt 275 Watt
    Interface PCIe 3.0 x16
    Supplementary power connectors 1 x 6-pin, 1 x 8-pin
    Memory type GDDR5 GDDR5
    Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort
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    • Radeon R9 390X has 13650% more power consumption, than GeForce GTX 675M SLI.
    • GeForce GTX 675M SLI is used in Laptops, and Radeon R9 390X - in Desktops.
    • GeForce GTX 675M SLI is build with Fermi architecture, and Radeon R9 390X - with GCN.
    • GeForce GTX 675M SLI is manufactured by 40 nm process technology, and Radeon R9 390X - by 28 nm process technology.
    • Memory clock speed of GeForce GTX 675M SLI is 1950 MHz higher, than Radeon R9 390X.

    Game benchmarks

    high / 1080p 18−20 50−55
    ultra / 1080p 10−12 30−35
    QHD / 1440p 5−6 24−27
    4K / 2160p 4−5 14−16
    low / 720p 35−40 75−80
    medium / 1080p 24−27 55−60
    The average gaming FPS of Radeon R9 390X in Assassin's Creed Odyssey is 152% more, than GeForce GTX 675M SLI.

    Full Specs

      GeForce GTX 675M SLI Radeon R9 390X
    Architecture Fermi GCN
    Code name N12E-GTX2 Grenada XT
    Type Laptop Desktop
    Release date 6 January 2011 16 June 2015
    Pipelines 768 2816
    Core clock speed 620 MHz
    Boost Clock 1050 MHz
    Transistor count 6,200 million
    Manufacturing process technology 40 nm 28 nm
    Texture fill rate 184.8
    Floating-point performance 5,914 gflops
    Length 275 mm
    Memory bus width 256 Bit 512 Bit
    Memory clock speed 3000 MHz 1050 MHz
    Memory bandwidth 384 GB/s
    Shared memory - -
    DirectX DirectX 11, Shader 5.0
    Shader Model 6.3
    OpenGL 4.6
    OpenCL 2.0
    Vulkan +
    CUDA +
    FreeSync +
    Bus support PCIe 3.0
    SLI options +
    HDMI +
    Bitcoin / BTC (SHA256) 684 Mh/s
    Laptop size large
    Optimus +
    Eyefinity +
    PowerTune +
    TrueAudio +
    Mantle +
    Design reference
    Bridgeless CrossFire +
    Number of Eyefinity displays 6
    DisplayPort support +
    CrossFire +
    VCE +
    DDMA audio +
    Ethereum / ETH (DaggerHashimoto) 27.5 Mh/s
    High bandwidth memory (HBM) -
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