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    Mobility Radeon HD 3870 X2 vs Radeon HD 7850

    Find out if it is worth upgrading your current GPU setup by comparing Mobility Radeon HD 3870 X2 and Radeon HD 7850. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between Mobility Radeon HD 3870 X2 and Radeon HD 7850. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.
    Mobility Radeon HD 3870 X2 Check Price
    Radeon HD 7850 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

      Mobility Radeon HD 3870 X2 Radeon HD 7850
    Power consumption (TDP) 110 Watt 225 Watt
    Interface PCIe 2.0 x16 PCIe 3.0 x16
    Supplementary power connectors 1x 6-pin
    Memory type GDDR3 GDDR5
    Maximum RAM amount 512 MB 2 GB
    Display Connectors No outputs 1x DVI, 1x HDMI, 2x mini-DisplayPort
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    • Radeon HD 7850 has 104% more power consumption, than Mobility Radeon HD 3870 X2.
    • Mobility Radeon HD 3870 X2 is connected by PCIe 2.0 x16, and Radeon HD 7850 uses PCIe 3.0 x16 interface.
    • Mobility Radeon HD 3870 X2 has 510 GB more memory, than Radeon HD 7850.
    • Mobility Radeon HD 3870 X2 is used in Laptops, and Radeon HD 7850 - in Desktops.
    • Mobility Radeon HD 3870 X2 is build with RV6xx architecture, and Radeon HD 7850 - with GCN 1.0.
    • Mobility Radeon HD 3870 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 350 MHz higher, than Mobility Radeon HD 3870 X2.

    Game benchmarks

    high / 1080p 6−7 18−20
    ultra / 1080p 4−5 10−12
    QHD / 1440p 0−1 5−6
    4K / 2160p − 4−5
    low / 720p 16−18 35−40
    medium / 1080p 8−9 24−27
    The average gaming FPS of Radeon HD 7850 in Assassin's Creed Odyssey is 155% more, than Mobility Radeon HD 3870 X2.

    Full Specs

      Mobility Radeon HD 3870 X2 Radeon HD 7850
    Architecture RV6xx GCN 1.0
    Code name M88-XT CF Pitcairn
    Type Laptop Desktop
    Release date 1 September 2008 5 March 2012
    Pipelines 640 1024
    Core clock speed 660 MHz
    Boost Clock 1000 MHz
    Transistor count 666 million 2,800 million
    Manufacturing process technology 55 nm 28 nm
    Texture fill rate 10.56 55.04
    Floating-point performance 2x 422.4 gflops 1,761 gflops
    Length 210 mm
    Memory bus width 256 Bit 256 Bit
    Memory clock speed 850 MHz 1200 MHz
    Memory bandwidth 54.4 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 N/A 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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