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    Mobility Radeon HD 4870 X2 vs Radeon HD 7850

    If you are going to buy a new graphics card and are choosing between Mobility Radeon HD 4870 X2 and Radeon HD 7850, 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 Mobility Radeon HD 4870 X2 stacks up against Radeon HD 7850, check out specs charts below.
    Mobility Radeon HD 4870 X2 Check Price
    Radeon HD 7850 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

      Mobility Radeon HD 4870 X2 Radeon HD 7850
    Power consumption (TDP) 225 Watt
    Interface PCIe 2.0 x16 PCIe 3.0 x16
    Supplementary power connectors 1x 6-pin
    Memory type GDDR3, GDDR5 GDDR5
    Maximum RAM amount 2 GB 2 GB
    Display Connectors No outputs 1x DVI, 1x HDMI, 2x mini-DisplayPort
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    • Mobility Radeon HD 4870 X2 is connected by PCIe 2.0 x16, and Radeon HD 7850 uses PCIe 3.0 x16 interface.
    • Mobility Radeon HD 4870 X2 and Radeon HD 7850 have maximum RAM of 2 GB.
    • Mobility Radeon HD 4870 X2 is used in Laptops, and Radeon HD 7850 - in Desktops.
    • Mobility Radeon HD 4870 X2 is build with Terascale 1 architecture, and Radeon HD 7850 - with GCN 1.0.
    • Mobility Radeon HD 4870 X2 is manufactured by 55 nm process technology, and Radeon HD 7850 - by 28 nm process technology.
    • Memory clock speed of Radeon HD 7850 is 312 MHz higher, than Mobility Radeon HD 4870 X2.

    Game benchmarks

    high / 1080p 9−10 18−20
    ultra / 1080p 5−6 10−12
    QHD / 1440p 0−1 5−6
    4K / 2160p − 4−5
    low / 720p 21−24 35−40
    medium / 1080p 12−14 24−27
    The average gaming FPS of Radeon HD 7850 in Assassin's Creed Odyssey is 91% more, than Mobility Radeon HD 4870 X2.

    Full Specs

      Mobility Radeon HD 4870 X2 Radeon HD 7850
    Architecture Terascale 1 GCN 1.0
    Code name M98-XT Pitcairn
    Type Laptop Desktop
    Release date 9 January 2009 5 March 2012
    Pipelines 1600 1024
    Core clock speed 550 MHz
    Boost Clock 1000 MHz
    Transistor count 956 million 2,800 million
    Manufacturing process technology 55 nm 28 nm
    Texture fill rate 22.00 55.04
    Floating-point performance 2x 880.0 gflops 1,761 gflops
    Length 210 mm
    Memory bus width 256 Bit 256 Bit
    Memory clock speed 888 MHz 1200 MHz
    Memory bandwidth 89.6 GB/s 153.6 GB/s
    Shared memory -
    DirectX 10.1 (10_1)
    Shader Model 4.1 5.1
    OpenGL 3.3 4.6
    OpenCL 1.1 1.2
    Vulkan N/A
    FreeSync +
    Bus support PCIe 2.1 x16
    HDMI +
    Bitcoin / BTC (SHA256) 249 Mh/s
    Laptop size large
    Eyefinity +
    Design reference
    CrossFire +
    Ethereum / ETH (DaggerHashimoto) 12.5 Mh/s
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