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    GeForce GT 745A vs Mobility Radeon HD 3870 X2

    When comparing GeForce GT 745A and Mobility Radeon HD 3870 X2, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between GeForce GT 745A and Mobility Radeon HD 3870 X2 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    GeForce GT 745A
    Mobility Radeon HD 3870 X2 Check Price

    Mobility Radeon HD 3870 X2 is a Laptop Graphics Card

    Note: Mobility Radeon HD 3870 X2 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 Mobility Radeon HD 3870 X2 here:

    Mobility Radeon HD 3870 X2 Laptops

    Main Specs

      GeForce GT 745A Mobility Radeon HD 3870 X2
    Power consumption (TDP) 33 Watt 110 Watt
    Interface PCIe 3.0 x16 PCIe 2.0 x16
    Memory type DDR3 GDDR3
    Maximum RAM amount 2 GB 512 MB
    Display Connectors No outputs No outputs
      Check Price
    • Mobility Radeon HD 3870 X2 has 233% more power consumption, than GeForce GT 745A.
    • GeForce GT 745A is connected by PCIe 3.0 x16, and Mobility Radeon HD 3870 X2 uses PCIe 2.0 x16 interface.
    • Mobility Radeon HD 3870 X2 has 510 GB more memory, than GeForce GT 745A.
    • GeForce GT 745A is used in Desktops, and Mobility Radeon HD 3870 X2 - in Laptops.
    • GeForce GT 745A is build with Kepler architecture, and Mobility Radeon HD 3870 X2 - with RV6xx.
    • Core clock speed of GeForce GT 745A is 177 MHz higher, than Mobility Radeon HD 3870 X2.
    • GeForce GT 745A is manufactured by 28 nm process technology, and Mobility Radeon HD 3870 X2 - by 55 nm process technology.
    • Memory clock speed of GeForce GT 745A is 950 MHz higher, than Mobility Radeon HD 3870 X2.

    Game benchmarks

    high / 1080p 2−3 6−7
    ultra / 1080p 0−1 4−5
    QHD / 1440p 0−1 0−1
    low / 720p 12−14 16−18
    medium / 1080p 4−5 8−9
    The average gaming FPS of Mobility Radeon HD 3870 X2 in Assassin's Creed Odyssey is 66% more, than GeForce GT 745A.

    Full Specs

      GeForce GT 745A Mobility Radeon HD 3870 X2
    Architecture Kepler RV6xx
    Code name GK107 M88-XT CF
    Type Desktop Laptop
    Release date 26 August 2013 1 September 2008
    Pipelines 384 640
    Core clock speed 837 MHz 660 MHz
    Boost Clock 915 MHz
    Transistor count 1,270 million 666 million
    Manufacturing process technology 28 nm 55 nm
    Texture fill rate 29.28 10.56
    Floating-point performance 642.8 gflops 2x 422.4 gflops
    Memory bus width 128 Bit 256 Bit
    Memory clock speed 1800 MHz 850 MHz
    Memory bandwidth 28.8 GB/s 54.4 GB/s
    Shared memory -
    DirectX 12 (11_0) 10.1 (10_1)
    Shader Model 5.1 4.1
    OpenGL 4.6 3.3
    OpenCL 1.2 N/A
    Vulkan 1.1.126 N/A
    CUDA 3.0
    Bitcoin / BTC (SHA256) 26 Mh/s
    Laptop size large
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