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    GeForce GT 645M vs Radeon HD 8970M

    If you are going to buy a new graphics card and are choosing between GeForce GT 645M and Radeon HD 8970M, 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 GT 645M stacks up against Radeon HD 8970M, check out specs charts below.
    GeForce GT 645M Check Price
    Radeon HD 8970M Check Price

    GeForce GT 645M and Radeon HD 8970M are Laptop Graphics Cards

    Note: GeForce GT 645M and Radeon HD 8970M 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 HD 8970M here:

    GeForce GT 645M Laptops
    Radeon HD 8970M Laptops

    Main Specs

      GeForce GT 645M Radeon HD 8970M
    Power consumption (TDP) 32 Watt 100 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 No outputs
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    • Radeon HD 8970M has 212% more power consumption, than GeForce GT 645M.
    • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
    • Radeon HD 8970M 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 HD 8970M - with GCN.
    • GeForce GT 645M and Radeon HD 8970M are manufactured by 28 nm process technology.
    • Memory clock speed of Radeon HD 8970M is 3000 MHz higher, than GeForce GT 645M.

    Game benchmarks

    high / 1080p 1−2 20−22
    ultra / 1080p 0−1 12−14
    QHD / 1440p 0−1 6−7
    4K / 2160p − 5−6
    low / 720p 12−14 35−40
    medium / 1080p 2−3 24−27
    The average gaming FPS of Radeon HD 8970M in Assassin's Creed Odyssey is 460% more, than GeForce GT 645M.

    Full Specs

      GeForce GT 645M Radeon HD 8970M
    Architecture Kepler GCN
    Code name N13P-GS Neptune
    Type Laptop Laptop
    Release date 22 March 2012 15 May 2013
    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 4800 MHz
    Memory bandwidth 153.6 GB/s
    Shared memory - -
    DirectX 12 API 12 (11_1)
    Shader Model 5.1 5.1
    OpenGL 4.5 4.6
    OpenCL 1.1 1.2
    Vulkan 1.1.126 1.2.131
    CUDA +
    CUDA cores 384
    Bus support PCI Express 2.0, PCI Express 3.0
    HDMI +
    HDCP +
    Maximum VGA resolution Up to 2048x1536
    3D Blu-Ray +
    Bitcoin / BTC (SHA256) 19 Mh/s 273 Mh/s
    Laptop size medium sized large
    Optimus +
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