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    GeForce GTX 860M vs Radeon R9 M390X

    If you are going to buy a new graphics card and are choosing between GeForce GTX 860M 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 860M stacks up against Radeon R9 M390X, check out specs charts below.
    GeForce GTX 860M Check Price
    Radeon R9 M390X Check Price

    GeForce GTX 860M and Radeon R9 M390X are Laptop Graphics Cards

    Note: GeForce GTX 860M 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 860M or Radeon R9 M390X here:

    GeForce GTX 860M Laptops
    Radeon R9 M390X Laptops

    Main Specs

      GeForce GTX 860M Radeon R9 M390X
    Power consumption (TDP) 75 Watt 100 Watt
    Interface MXM-B (3.0) PCIe 3.0 x16
    Supplementary power connectors None None
    Memory type GDDR5 GDDR5
    Maximum RAM amount 4 GB 4 GB
    Display Connectors No outputs No outputs
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    • Radeon R9 M390X has 33% more power consumption, than GeForce GTX 860M.
    • GeForce GTX 860M is connected by MXM-B (3.0), and Radeon R9 M390X uses PCIe 3.0 x16 interface.
    • GeForce GTX 860M and Radeon R9 M390X have maximum RAM of 4 GB.
    • Both cards are used in Laptops.
    • GeForce GTX 860M is build with Maxwell architecture, and Radeon R9 M390X - with GCN 3.
    • Core clock speed of GeForce GTX 860M is 74 MHz higher, than Radeon R9 M390X.
    • GeForce GTX 860M and Radeon R9 M390X are manufactured by 28 nm process technology.

    Game benchmarks

    high / 1080p 16−18 21−24
    ultra / 1080p 10−11 12−14
    QHD / 1440p 5−6 8−9
    4K / 2160p 4−5 5−6
    low / 720p 30−35 40−45
    medium / 1080p 21−24 27−30
    The average gaming FPS of Radeon R9 M390X in Assassin's Creed Odyssey is 33% more, than GeForce GTX 860M.

    Full Specs

      GeForce GTX 860M Radeon R9 M390X
    Architecture Maxwell GCN 3
    Code name N15P-GX Amethyst (XT) / Tonga
    Type Laptop Laptop
    Release date 12 March 2014 9 June 2015
    Pipelines 640 2048
    Core clock speed 797 MHz 723 MHz
    Boost Clock 915 MHz
    Transistor count 1,870 million 5,000 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 43.40 92.54
    Floating-point performance 1,389 gflops 2,961 gflops
    Memory bus width 128 Bit 256 Bit
    Memory bandwidth 80.0 GB/s 160.0 GB/s
    Shared memory - -
    DirectX 12 (11_0)
    Shader Model 5.1 6.3
    OpenGL 4.5 4.4
    OpenCL 1.1 Not Listed
    Vulkan 1.1.126 +
    CUDA +
    FreeSync +
    CUDA cores 1152 or 640
    Bus support PCI Express 2.0, PCI Express 3.0 PCIe 3.0
    SLI options +
    HDMI +
    Bitcoin / BTC (SHA256) 163 Mh/s
    Laptop size medium sized large
    Standard memory configuration GDDR5
    eDP 1.2 signal support Up to 3840x2160
    LVDS signal support Up to 1920x1200
    DisplayPort Multimode (DP++) support Up to 3840x2160
    HDCP content protection +
    7.1 channel HD audio on HDMI +
    TrueHD and DTS-HD audio bitstreaming +
    H.264, VC1, MPEG2 1080p video decoder +
    Optimus +
    Eyefinity +
    HD3D +
    PowerTune +
    DualGraphics +
    ZeroCore +
    Switchable graphics +
    Mantle +
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