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    Mobility Radeon HD 4870 X2 vs Radeon HD 7850M

    When comparing Mobility Radeon HD 4870 X2 and Radeon HD 7850M, 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 Mobility Radeon HD 4870 X2 and Radeon HD 7850M is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    Mobility Radeon HD 4870 X2 Check Price
    Radeon HD 7850M Check Price

    Mobility Radeon HD 4870 X2 and Radeon HD 7850M are Laptop Graphics Cards

    Note: Mobility Radeon HD 4870 X2 and Radeon HD 7850M 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 Mobility Radeon HD 4870 X2 or Radeon HD 7850M here:

    Mobility Radeon HD 4870 X2 Laptops
    Radeon HD 7850M Laptops

    Main Specs

      Mobility Radeon HD 4870 X2 Radeon HD 7850M
    Power consumption (TDP) 40 Watt
    Interface PCIe 2.0 x16 PCIe 3.0 x16
    Memory type GDDR3, GDDR5 GDDR5
    Maximum RAM amount 2 GB 2 GB
    Display Connectors No outputs No outputs
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    • Mobility Radeon HD 4870 X2 is connected by PCIe 2.0 x16, and Radeon HD 7850M uses PCIe 3.0 x16 interface.
    • Mobility Radeon HD 4870 X2 and Radeon HD 7850M have maximum RAM of 2 GB.
    • Both cards are used in Laptops.
    • Mobility Radeon HD 4870 X2 is build with Terascale 1 architecture, and Radeon HD 7850M - with GCN.
    • Core clock speed of Radeon HD 7850M is 125 MHz higher, than Mobility Radeon HD 4870 X2.
    • Mobility Radeon HD 4870 X2 is manufactured by 55 nm process technology, and Radeon HD 7850M - by 28 nm process technology.
    • Memory clock speed of Radeon HD 7850M is 3112 MHz higher, than Mobility Radeon HD 4870 X2.

    Game benchmarks

    high / 1080p 9−10 6−7
    ultra / 1080p 5−6 3−4
    QHD / 1440p 0−1 0−1
    low / 720p 21−24 14−16
    medium / 1080p 12−14 7−8
    The average gaming FPS of Mobility Radeon HD 4870 X2 in Assassin's Creed Odyssey is 50% more, than Radeon HD 7850M.

    Full Specs

      Mobility Radeon HD 4870 X2 Radeon HD 7850M
    Architecture Terascale 1 GCN
    Code name M98-XT Heathrow Pro
    Type Laptop Laptop
    Release date 9 January 2009 24 April 2012
    Pipelines 1600 640
    Core clock speed 550 MHz 675 MHz
    Transistor count 956 million 1,500 million
    Manufacturing process technology 55 nm 28 nm
    Texture fill rate 22.00 27.00
    Floating-point performance 2x 880.0 gflops 864.0 gflops
    Memory bus width 256 Bit 128 Bit
    Memory clock speed 888 MHz 4000 MHz
    Memory bandwidth 89.6 GB/s 64 GB/s
    Shared memory - -
    DirectX 10.1 (10_1) 12 (11_1)
    Shader Model 4.1 5.1
    OpenGL 3.3 4.6
    OpenCL 1.1 1.2
    Vulkan N/A 1.2.131
    Laptop size large large
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