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    GeForce GT 645M vs Radeon R9 380X

    When choosing between GeForce GT 645M and Radeon R9 380X, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce GT 645M and Radeon R9 380X.
    GeForce GT 645M Check Price
    Radeon R9 380X Check Price

    GeForce GT 645M is a Laptop Graphics Card

    Note: GeForce GT 645M 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 GT 645M here:

    GeForce GT 645M Laptops

    Main Specs

      GeForce GT 645M Radeon R9 380X
    Power consumption (TDP) 32 Watt 190 Watt
    Interface PCIe 3.0 x16 PCIe 3.0 x16
    Memory type DDR3\GDDR5 GDDR5
    Maximum RAM amount 2 GB 4 GB
    Display Connectors No outputs 2x DVI, 1x HDMI, 1x DisplayPort
      Check Price Check Price
    • Radeon R9 380X has 493% more power consumption, than GeForce GT 645M.
    • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
    • Radeon R9 380X has 2 GB more memory, than GeForce GT 645M.
    • GeForce GT 645M is used in Laptops, and Radeon R9 380X - in Desktops.
    • GeForce GT 645M is build with Kepler architecture, and Radeon R9 380X - with GCN 3.0.
    • GeForce GT 645M and Radeon R9 380X are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce GT 645M is 830 MHz higher, than Radeon R9 380X.

    Game benchmarks

    high / 1080p 1−2 35−40
    ultra / 1080p 0−1 21−24
    QHD / 1440p 0−1 16−18
    4K / 2160p − 10−11
    low / 720p 12−14 60−65
    medium / 1080p 2−3 40−45
    The average gaming FPS of Radeon R9 380X in Assassin's Creed Odyssey is 840% more, than GeForce GT 645M.

    Full Specs

      GeForce GT 645M Radeon R9 380X
    Architecture Kepler GCN 3.0
    Code name N13P-GS Antigua
    Type Laptop Desktop
    Release date 22 March 2012 19 November 2015
    Pipelines 384 2048
    Boost Clock 970 MHz
    Transistor count 1,270 million 5,000 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 22.7 billion/sec 124.2
    Floating-point performance 544.5 gflops 3,973 gflops
    Length 221 mm
    Memory bus width 128bit 256 Bit
    Memory clock speed 1800 MHz 970 MHz
    Memory bandwidth 182.4 GB/s
    Shared memory -
    DirectX 12 API
    Shader Model 5.1 6.3
    OpenGL 4.5 4.5
    OpenCL 1.1 2.0
    Vulkan 1.1.126 +
    CUDA +
    Monero / XMR (CryptoNight) 0.58 kh/s
    FreeSync +
    CUDA cores 384
    Bus support PCI Express 2.0, PCI Express 3.0 PCIe 3.0
    HDMI + +
    HDCP +
    Maximum VGA resolution Up to 2048x1536
    3D Blu-Ray +
    Bitcoin / BTC (SHA256) 19 Mh/s
    Laptop size medium sized
    Optimus +
    Eyefinity +
    HD3D +
    PowerTune +
    TrueAudio +
    ZeroCore +
    Mantle +
    Design reference
    Bridgeless CrossFire +
    Number of Eyefinity displays 6
    DisplayPort support +
    CrossFire +
    VCE +
    DDMA audio +
    Decred / DCR (Decred) 0.89 Gh/s
    Ethereum / ETH (DaggerHashimoto) 20.63 Mh/s
    Zcash / ZEC (Equihash) 175 Sol/s
    Compute units 32
    Form factor full height / full length
    High bandwidth memory (HBM) -
    LiquidVR +
    FRTC +
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