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    GeForce GT 645M vs GeForce GTX 750 Ti

    If you are going to buy a new graphics card and are choosing between GeForce GT 645M and GeForce GTX 750 Ti, 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 GeForce GTX 750 Ti, check out specs charts below.
    GeForce GT 645M Check Price
    GeForce GTX 750 Ti 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 GeForce GTX 750 Ti
    Power consumption (TDP) 32 Watt 60 Watt
    Interface PCIe 3.0 x16 PCIe 3.0 x16
    Supplementary power connectors None
    Memory type DDR3\GDDR5 GDDR5
    Maximum RAM amount 2 GB 2 GB
    Display Connectors No outputs 2x DVI, 1x mini-HDMI
      Check Price Check Price
    • GeForce GTX 750 Ti has 87% more power consumption, than GeForce GT 645M.
    • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
    • GeForce GT 645M and GeForce GTX 750 Ti have maximum RAM of 2 GB.
    • GeForce GT 645M is used in Laptops, and GeForce GTX 750 Ti - in Desktops.
    • GeForce GT 645M is build with Kepler architecture, and GeForce GTX 750 Ti - with Maxwell.
    • GeForce GT 645M and GeForce GTX 750 Ti are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce GT 645M is 1795 MHz higher, than GeForce GTX 750 Ti.

    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 40−45
    medium / 1080p 2−3 24−27
    The average gaming FPS of GeForce GTX 750 Ti in Assassin's Creed Odyssey is 480% more, than GeForce GT 645M.

    Full Specs

      GeForce GT 645M GeForce GTX 750 Ti
    Architecture Kepler Maxwell
    Code name N13P-GS GM107
    Type Laptop Desktop
    Release date 22 March 2012 18 February 2014
    Pipelines 384 640
    Core clock speed 1020 MHz
    Boost Clock 1085 MHz
    Transistor count 1,270 million 1,870 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 22.7 billion/sec 43.40
    Floating-point performance 544.5 gflops 1,389 gflops
    Length 5.7" (14.5 cm)
    Memory bus width 128bit 128 Bit
    Memory clock speed 1800 MHz 5.4 GB/s
    Memory bandwidth 86.4 GB/s
    Shared memory - -
    DirectX 12 API 12 (11_0)
    Shader Model 5.1 5.1
    OpenGL 4.5 4.4
    OpenCL 1.1 1.2
    Vulkan 1.1.126 1.1.126
    CUDA + +
    Monero / XMR (CryptoNight) 0.25 kh/s
    CUDA cores 384 640
    Bus support PCI Express 2.0, PCI Express 3.0 PCI Express 3.0
    Height 4.376" (11.1 cm)
    Multi monitor support 4 displays
    HDMI + +
    HDCP + +
    Maximum VGA resolution Up to 2048x1536 2048x1536
    Audio input for HDMI Internal
    3D Blu-Ray +
    3D Gaming +
    3D Vision +
    3D Vision Live +
    Bitcoin / BTC (SHA256) 19 Mh/s 183 Mh/s
    Laptop size medium sized
    Optimus +
    Decred / DCR (Decred) 0.51 Gh/s
    Ethereum / ETH (DaggerHashimoto) 2.3 Mh/s
    Zcash / ZEC (Equihash) 74.4 Sol/s
    Blu Ray 3D +
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