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    GeForce 840A vs Mobility Radeon HD 4870 X2

    When comparing GeForce 840A and Mobility Radeon HD 4870 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 840A and Mobility Radeon HD 4870 X2 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    GeForce 840A
    Mobility Radeon HD 4870 X2 Check Price

    Mobility Radeon HD 4870 X2 is a Laptop Graphics Card

    Note: Mobility Radeon HD 4870 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 4870 X2 here:

    Mobility Radeon HD 4870 X2 Laptops

    Main Specs

      GeForce 840A Mobility Radeon HD 4870 X2
    Power consumption (TDP) 33 Watt
    Interface PCIe 3.0 x8 PCIe 2.0 x16
    Memory type DDR3 GDDR3, GDDR5
    Maximum RAM amount 2 GB 2 GB
    Display Connectors No outputs No outputs
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    • GeForce 840A is connected by PCIe 3.0 x8, and Mobility Radeon HD 4870 X2 uses PCIe 2.0 x16 interface.
    • GeForce 840A and Mobility Radeon HD 4870 X2 have maximum RAM of 2 GB.
    • GeForce 840A is used in Desktops, and Mobility Radeon HD 4870 X2 - in Laptops.
    • GeForce 840A is build with Maxwell architecture, and Mobility Radeon HD 4870 X2 - with Terascale 1.
    • Core clock speed of GeForce 840A is 479 MHz higher, than Mobility Radeon HD 4870 X2.
    • GeForce 840A is manufactured by 28 nm process technology, and Mobility Radeon HD 4870 X2 - by 55 nm process technology.
    • Memory clock speed of GeForce 840A is 1114 MHz higher, than Mobility Radeon HD 4870 X2.

    Game benchmarks

    high / 1080p 3−4 9−10
    ultra / 1080p 2−3 5−6
    QHD / 1440p 0−1 0−1
    low / 720p 14−16 21−24
    medium / 1080p 5−6 12−14
    The average gaming FPS of Mobility Radeon HD 4870 X2 in Assassin's Creed Odyssey is 100% more, than GeForce 840A.

    Full Specs

      GeForce 840A Mobility Radeon HD 4870 X2
    Architecture Maxwell Terascale 1
    Code name GM108 M98-XT
    Type Desktop Laptop
    Release date 17 March 2014 9 January 2009
    Pipelines 384 1600
    Core clock speed 1029 MHz 550 MHz
    Boost Clock 1124 MHz
    Transistor count 956 million
    Manufacturing process technology 28 nm 55 nm
    Texture fill rate 17.98 22.00
    Floating-point performance 863.2 gflops 2x 880.0 gflops
    Memory bus width 64 Bit 256 Bit
    Memory clock speed 2002 MHz 888 MHz
    Memory bandwidth 16.02 GB/s 89.6 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 1.1
    Vulkan 1.1.126 N/A
    CUDA 5.0
    Laptop size large
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