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    Mobility Radeon HD 4870 X2 vs Radeon HD 7770M

    If you are going to buy a new graphics card and are choosing between Mobility Radeon HD 4870 X2 and Radeon HD 7770M, 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 7770M, check out specs charts below.
    Mobility Radeon HD 4870 X2 Check Price
    Radeon HD 7770M Check Price

    Mobility Radeon HD 4870 X2 and Radeon HD 7770M are Laptop Graphics Cards

    Note: Mobility Radeon HD 4870 X2 and Radeon HD 7770M 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 7770M here:

    Mobility Radeon HD 4870 X2 Laptops
    Radeon HD 7770M Laptops

    Main Specs

      Mobility Radeon HD 4870 X2 Radeon HD 7770M
    Power consumption (TDP) 32 Watt
    Interface PCIe 2.0 x16 PCIe 2.0 x16
    Memory type GDDR3, GDDR5 GDDR5
    Maximum RAM amount 2 GB 1 GB
    Display Connectors No outputs No outputs
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    • Both video cards are using PCIe 2.0 x16 interface connection to a motherboard.
    • Mobility Radeon HD 4870 X2 has 1 GB more memory, than Radeon HD 7770M.
    • Both cards are used in Laptops.
    • Mobility Radeon HD 4870 X2 is build with Terascale 1 architecture, and Radeon HD 7770M - with GCN.
    • Core clock speed of Radeon HD 7770M 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 7770M - by 28 nm process technology.
    • Memory clock speed of Radeon HD 7770M is 3112 MHz higher, than Mobility Radeon HD 4870 X2.

    Game benchmarks

    high / 1080p 9−10 9−10
    ultra / 1080p 5−6 5−6
    QHD / 1440p 0−1 0−1
    low / 720p 21−24 21−24
    medium / 1080p 12−14 10−12
    Mobility Radeon HD 4870 X2 and Radeon HD 7770M have the same average FPS in Assassin's Creed Odyssey.

    Full Specs

      Mobility Radeon HD 4870 X2 Radeon HD 7770M
    Architecture Terascale 1 GCN
    Code name M98-XT Chelsea XT
    Type Laptop Laptop
    Release date 9 January 2009 24 April 2012
    Pipelines 1600 512
    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 21.60
    Floating-point performance 2x 880.0 gflops 691.2 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 medium sized
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