Subscribe to our YouTube channel ×

    Radeon R9 M275 vs Radeon R9 M390X

    If you are going to buy a new graphics card and are choosing between Radeon R9 M275 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 Radeon R9 M275 stacks up against Radeon R9 M390X, check out specs charts below.
    Radeon R9 M275 Check Price
    Radeon R9 M390X Check Price

    Radeon R9 M275 and Radeon R9 M390X are Laptop Graphics Cards

    Note: Radeon R9 M275 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 Radeon R9 M275 or Radeon R9 M390X here:

    Radeon R9 M275 Laptops
    Radeon R9 M390X Laptops

    Main Specs

      Radeon R9 M275 Radeon R9 M390X
    Power consumption (TDP) 100 Watt
    Interface PCIe 3.0 x16 PCIe 3.0 x16
    Supplementary power connectors None
    Memory type GDDR5 GDDR5
    Maximum RAM amount 4 GB 4 GB
    Display Connectors No outputs No outputs
      Check Price Check Price
    • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
    • Radeon R9 M275 and Radeon R9 M390X have maximum RAM of 4 GB.
    • Both cards are used in Laptops.
    • Radeon R9 M275 is build with GCN architecture, and Radeon R9 M390X - with GCN 3.
    • Core clock speed of Radeon R9 M275 is 202 MHz higher, than Radeon R9 M390X.
    • Radeon R9 M275 and Radeon R9 M390X are manufactured by 28 nm process technology.

    Game benchmarks

    high / 1080p 0−1 21−24
    ultra / 1080p − 12−14
    QHD / 1440p 0−1 8−9
    4K / 2160p − 5−6
    low / 720p 12−14 40−45
    medium / 1080p 3−4 27−30
    The average gaming FPS of Radeon R9 M390X in Assassin's Creed Odyssey is 337% more, than Radeon R9 M275.

    Full Specs

      Radeon R9 M275 Radeon R9 M390X
    Architecture GCN GCN 3
    Code name Venus Amethyst (XT) / Tonga
    Type Laptop Laptop
    Release date 1 August 2014 9 June 2015
    Pipelines 640 2048
    Core clock speed 925 MHz 723 MHz
    Boost Clock 925 MHz
    Transistor count 1,500 million 5,000 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 37.00 92.54
    Floating-point performance 1,184 gflops 2,961 gflops
    Memory bus width 128 Bit 256 Bit
    Memory clock speed 4500 MHz
    Memory bandwidth 64 GB/s 160.0 GB/s
    Shared memory - -
    DirectX 12 (11_1)
    Shader Model 5.1 6.3
    OpenGL 4.6 4.4
    OpenCL 1.2 Not Listed
    Vulkan 1.2.131 +
    FreeSync +
    Bus support PCIe 3.0
    Bitcoin / BTC (SHA256) 122 Mh/s
    Laptop size large large
    Eyefinity +
    HD3D +
    PowerTune +
    DualGraphics +
    ZeroCore +
    Switchable graphics +
    Mantle +
      Check Price Check Price

    Similar compares