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    FireStream 9250 vs GeForce GT 645M

    If you are going to buy a new graphics card and are choosing between FireStream 9250 and GeForce GT 645M, 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 FireStream 9250 stacks up against GeForce GT 645M, check out specs charts below.
    FireStream 9250
    GeForce GT 645M 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

      FireStream 9250 GeForce GT 645M
    Power consumption (TDP) 150 Watt 32 Watt
    Interface PCIe 2.0 x16 PCIe 3.0 x16
    Supplementary power connectors 1x 6-pin
    Memory type GDDR3 DDR3\GDDR5
    Maximum RAM amount 1 GB 2 GB
    Display Connectors 1x DVI No outputs
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    • FireStream 9250 has 368% more power consumption, than GeForce GT 645M.
    • FireStream 9250 is connected by PCIe 2.0 x16, and GeForce GT 645M uses PCIe 3.0 x16 interface.
    • GeForce GT 645M has 1 GB more memory, than FireStream 9250.
    • FireStream 9250 is used in Desktops, and GeForce GT 645M - in Laptops.
    • FireStream 9250 is build with TeraScale architecture, and GeForce GT 645M - with Kepler.
    • FireStream 9250 is manufactured by 55 nm process technology, and GeForce GT 645M - by 28 nm process technology.
    • Memory clock speed of FireStream 9250 is 186 MHz higher, than GeForce GT 645M.

    Game benchmarks

    high / 1080p 2−3 1−2
    ultra / 1080p 1−2 0−1
    QHD / 1440p 0−1 0−1
    low / 720p 12−14 12−14
    medium / 1080p 5−6 2−3
    The average gaming FPS of FireStream 9250 in Assassin's Creed Odyssey is 40% more, than GeForce GT 645M.

    Full Specs

      FireStream 9250 GeForce GT 645M
    Architecture TeraScale Kepler
    Code name RV770 N13P-GS
    Type Desktop Laptop
    Release date 16 June 2008 22 March 2012
    Pipelines 800 384
    Core clock speed 625 MHz
    Transistor count 956 million 1,270 million
    Manufacturing process technology 55 nm 28 nm
    Texture fill rate 25.00 22.7 billion/sec
    Floating-point performance 1,000.0 gflops 544.5 gflops
    Memory bus width 256 Bit 128bit
    Memory clock speed 1986 MHz 1800 MHz
    Memory bandwidth 63.55 GB/s
    Shared memory -
    DirectX 10.1 (10_1) 12 API
    Shader Model 4.1 5.1
    OpenGL 3.3 4.5
    OpenCL 1.1 1.1
    Vulkan N/A 1.1.126
    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
    Laptop size medium sized
    Optimus +
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