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    GeForce GT 645M vs Radeon R9 M290X

    In this comparison between GeForce GT 645M and Radeon R9 M290X you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce GT 645M will be the best choice, for others Radeon R9 M290X will be their preference. Study the comparison tables below and make your choice.
    GeForce GT 645M Check Price
    Radeon R9 M290X Check Price

    GeForce GT 645M and Radeon R9 M290X are Laptop Graphics Cards

    Note: GeForce GT 645M and Radeon R9 M290X 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 GT 645M or Radeon R9 M290X here:

    GeForce GT 645M Laptops
    Radeon R9 M290X Laptops

    Main Specs

      GeForce GT 645M Radeon R9 M290X
    Power consumption (TDP) 32 Watt 100 Watt
    Interface PCIe 3.0 x16 PCIe 3.0 x16
    Supplementary power connectors None
    Memory type DDR3\GDDR5 GDDR5
    Maximum RAM amount 2 GB 4 GB
    Display Connectors No outputs No outputs
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    • Radeon R9 M290X has 212% more power consumption, than GeForce GT 645M.
    • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
    • Radeon R9 M290X has 2 GB more memory, than GeForce GT 645M.
    • Both cards are used in Laptops.
    • GeForce GT 645M is build with Kepler architecture, and Radeon R9 M290X - with GCN.
    • GeForce GT 645M and Radeon R9 M290X are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce GT 645M is 600 MHz higher, than Radeon R9 M290X.

    Game benchmarks

    high / 1080p 1−2 16−18
    ultra / 1080p 0−1 10−11
    QHD / 1440p 0−1 4−5
    4K / 2160p − 4−5
    low / 720p 12−14 30−35
    medium / 1080p 2−3 20−22
    The average gaming FPS of Radeon R9 M290X in Assassin's Creed Odyssey is 360% more, than GeForce GT 645M.

    Full Specs

      GeForce GT 645M Radeon R9 M290X
    Architecture Kepler GCN
    Code name N13P-GS Neptune
    Type Laptop Laptop
    Release date 22 March 2012 7 January 2014
    Pipelines 384 1280
    Core clock speed 850 MHz
    Boost Clock 900 MHz
    Transistor count 1,270 million 2,800 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 22.7 billion/sec 72.00
    Floating-point performance 544.5 gflops 2,304 gflops
    Memory bus width 128bit 256 Bit
    Memory clock speed 1800 MHz 1200 MHz
    Memory bandwidth 153.6 GB/s
    Shared memory - -
    DirectX 12 API
    Shader Model 5.1 5.1
    OpenGL 4.5 4.4
    OpenCL 1.1 Not Listed
    Vulkan 1.1.126
    CUDA +
    FreeSync +
    CUDA cores 384
    Bus support PCI Express 2.0, PCI Express 3.0 PCIe 3.0 x16
    HDMI +
    HDCP +
    Maximum VGA resolution Up to 2048x1536
    3D Blu-Ray +
    Bitcoin / BTC (SHA256) 19 Mh/s 300 Mh/s
    Laptop size medium sized large
    Optimus +
    Eyefinity +
    HD3D +
    PowerTune +
    DualGraphics +
    ZeroCore +
    Switchable graphics +
    Mantle +
    Compute units 20
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