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    GeForce 845M vs Mobility Radeon HD 3870 X2

    If you are going to buy a new graphics card and are choosing between GeForce 845M and Mobility Radeon HD 3870 X2, 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 845M stacks up against Mobility Radeon HD 3870 X2, check out specs charts below.
    GeForce 845M Check Price
    Mobility Radeon HD 3870 X2 Check Price

    GeForce 845M and Mobility Radeon HD 3870 X2 are Laptop Graphics Cards

    Note: GeForce 845M and Mobility Radeon HD 3870 X2 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 845M or Mobility Radeon HD 3870 X2 here:

    GeForce 845M Laptops
    Mobility Radeon HD 3870 X2 Laptops

    Main Specs

      GeForce 845M Mobility Radeon HD 3870 X2
    Power consumption (TDP) 45 Watt 110 Watt
    Interface PCIe 3.0 x8 PCIe 2.0 x16
    Memory type DDR3, GDDR5 GDDR3
    Maximum RAM amount 2 GB 512 MB
    Display Connectors No outputs No outputs
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    • Mobility Radeon HD 3870 X2 has 144% more power consumption, than GeForce 845M.
    • GeForce 845M is connected by PCIe 3.0 x8, and Mobility Radeon HD 3870 X2 uses PCIe 2.0 x16 interface.
    • Mobility Radeon HD 3870 X2 has 510 GB more memory, than GeForce 845M.
    • Both cards are used in Laptops.
    • GeForce 845M is build with Maxwell architecture, and Mobility Radeon HD 3870 X2 - with RV6xx.
    • Core clock speed of GeForce 845M is 411 MHz higher, than Mobility Radeon HD 3870 X2.
    • GeForce 845M is manufactured by 28 nm process technology, and Mobility Radeon HD 3870 X2 - by 55 nm process technology.
    • Memory clock speed of GeForce 845M is 1150 MHz higher, than Mobility Radeon HD 3870 X2.

    Game benchmarks

    high / 1080p 3−4 6−7
    ultra / 1080p 1−2 4−5
    QHD / 1440p 0−1 0−1
    low / 720p 14−16 16−18
    medium / 1080p 6−7 8−9
    The average gaming FPS of Mobility Radeon HD 3870 X2 in Assassin's Creed Odyssey is 50% more, than GeForce 845M.

    Full Specs

      GeForce 845M Mobility Radeon HD 3870 X2
    Architecture Maxwell RV6xx
    Code name GM108 M88-XT CF
    Type Laptop Laptop
    Release date 12 March 2014 1 September 2008
    Pipelines 384 640
    Core clock speed 1071 MHz 660 MHz
    Boost Clock 1150 MHz
    Transistor count 1,870 million 666 million
    Manufacturing process technology 28 nm 55 nm
    Texture fill rate 37.63 10.56
    Floating-point performance 883.7 gflops 2x 422.4 gflops
    Memory bus width 64/128 Bit 256 Bit
    Memory clock speed 2000 - 5000 MHz 850 MHz
    Memory bandwidth 40.1 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 +
    Bitcoin / BTC (SHA256) 76 Mh/s
    Laptop size medium sized large
    Optimus +
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