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    Mobility Radeon HD 4870 X2 vs Radeon R9 M270X

    When comparing Mobility Radeon HD 4870 X2 and Radeon R9 M270X, 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 R9 M270X 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 R9 M270X

    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 R9 M270X
    Interface PCIe 2.0 x16 PCIe 3.0 x16
    Memory type GDDR3, GDDR5 GDDR5
    Maximum RAM amount 2 GB 4 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 R9 M270X uses PCIe 3.0 x16 interface.
    • Radeon R9 M270X has 2 GB more memory, than Mobility Radeon HD 4870 X2.
    • Mobility Radeon HD 4870 X2 is used in Laptops, and Radeon R9 M270X - in Desktops.
    • Mobility Radeon HD 4870 X2 is build with Terascale 1 architecture, and Radeon R9 M270X - with GCN 1.0.
    • Core clock speed of Radeon R9 M270X is 175 MHz higher, than Mobility Radeon HD 4870 X2.
    • Mobility Radeon HD 4870 X2 is manufactured by 55 nm process technology, and Radeon R9 M270X - by 28 nm process technology.
    • Memory clock speed of Radeon R9 M270X is 237 MHz higher, than Mobility Radeon HD 4870 X2.

    Game benchmarks

    high / 1080p 9−10 6−7
    ultra / 1080p 5−6 4−5
    QHD / 1440p 0−1 0−1
    low / 720p 21−24 16−18
    medium / 1080p 12−14 8−9
    The average gaming FPS of Mobility Radeon HD 4870 X2 in Assassin's Creed Odyssey is 33% more, than Radeon R9 M270X.

    Full Specs

      Mobility Radeon HD 4870 X2 Radeon R9 M270X
    Architecture Terascale 1 GCN 1.0
    Code name M98-XT Venus
    Type Laptop Desktop
    Release date 9 January 2009 21 March 2014
    Pipelines 1600 640
    Core clock speed 550 MHz 725 MHz
    Boost Clock 775 MHz
    Transistor count 956 million 1,500 million
    Manufacturing process technology 55 nm 28 nm
    Texture fill rate 22.00 31.00
    Floating-point performance 2x 880.0 gflops 1,536 gflops
    Memory bus width 256 Bit 128 Bit
    Memory clock speed 888 MHz 1125 MHz
    Memory bandwidth 89.6 GB/s 72 GB/s
    Shared memory -
    DirectX 10.1 (10_1)
    Shader Model 4.1 5.1
    OpenGL 3.3 4.4
    OpenCL 1.1 Not Listed
    Vulkan N/A
    FreeSync +
    Bus support PCIe 3.0 x16
    Laptop size large
    Eyefinity +
    HD3D +
    PowerTune +
    DualGraphics +
    ZeroCore +
    Switchable graphics +
    Mantle +
    Compute units 10
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