Subscribe to our YouTube channel ×

    GeForce GTX 675MX vs Radeon R9 M390X

    Find out if it is worth upgrading your current GPU setup by comparing GeForce GTX 675MX and Radeon R9 M390X. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between GeForce GTX 675MX and Radeon R9 M390X. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.
    GeForce GTX 675MX Check Price
    Radeon R9 M390X Check Price

    GeForce GTX 675MX and Radeon R9 M390X are Laptop Graphics Cards

    Note: GeForce GTX 675MX 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 675MX or Radeon R9 M390X here:

    GeForce GTX 675MX Laptops
    Radeon R9 M390X Laptops

    Main Specs

      GeForce GTX 675MX Radeon R9 M390X
    Power consumption (TDP) 100 Watt 100 Watt
    Interface MXM-B (3.0) PCIe 3.0 x16
    Supplementary power connectors None None
    Memory type GDDR5 GDDR5
    Maximum RAM amount 2 GB 4 GB
    Display Connectors No outputs No outputs
      Check Price Check Price
    • Both graphics cards have the same power consumption of 100 Watt.
    • GeForce GTX 675MX is connected by MXM-B (3.0), and Radeon R9 M390X uses PCIe 3.0 x16 interface.
    • Radeon R9 M390X has 2 GB more memory, than GeForce GTX 675MX.
    • Both cards are used in Laptops.
    • GeForce GTX 675MX is build with Kepler architecture, and Radeon R9 M390X - with GCN 3.
    • Core clock speed of Radeon R9 M390X is 123 MHz higher, than GeForce GTX 675MX.
    • GeForce GTX 675MX and Radeon R9 M390X are manufactured by 28 nm process technology.

    Game benchmarks

    high / 1080p 9−10 21−24
    ultra / 1080p 5−6 12−14
    QHD / 1440p 0−1 8−9
    4K / 2160p − 5−6
    low / 720p 21−24 40−45
    medium / 1080p 12−14 27−30
    The average gaming FPS of Radeon R9 M390X in Assassin's Creed Odyssey is 116% more, than GeForce GTX 675MX.

    Full Specs

      GeForce GTX 675MX Radeon R9 M390X
    Architecture Kepler GCN 3
    Code name N13E-GSR Amethyst (XT) / Tonga
    Type Laptop Laptop
    Release date 1 October 2012 9 June 2015
    Pipelines 960 2048
    Core clock speed 600 MHz 723 MHz
    Transistor count 3,540 million 5,000 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 48.0 billion/sec 92.54
    Floating-point performance 1,256 gflops 2,961 gflops
    Memory bus width 256 Bit 256 Bit
    Memory clock speed 1800 MHz
    Memory bandwidth 115.2 GB/s 160.0 GB/s
    Shared memory - -
    DirectX 12 API
    Shader Model 5.1 6.3
    OpenGL 4.5 4.4
    OpenCL 1.1 Not Listed
    Vulkan 1.1.126 +
    CUDA +
    FreeSync +
    CUDA cores 960
    Bus support PCI Express 2.0 PCIe 3.0
    SLI options +
    HDMI +
    HDCP +
    Maximum VGA resolution Up to 2048x1536
    Bitcoin / BTC (SHA256) 63 Mh/s
    Laptop size large large
    Optimus +
    Eyefinity +
    HD3D +
    PowerTune +
    DualGraphics +
    ZeroCore +
    Switchable graphics +
    Mantle +
      Check Price Check Price

    Similar compares