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    Mobility Radeon HD 4870 vs Radeon R7 250X

    When comparing Mobility Radeon HD 4870 and Radeon R7 250X, 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 and Radeon R7 250X is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    Mobility Radeon HD 4870 Check Price
    Radeon R7 250X Check Price

    Mobility Radeon HD 4870 is a Laptop Graphics Card

    Note: Mobility Radeon HD 4870 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 here:

    Mobility Radeon HD 4870 Laptops

    Main Specs

      Mobility Radeon HD 4870 Radeon R7 250X
    Power consumption (TDP) 80 Watt
    Interface PCIe 2.0 x16 PCIe 3.0 x16
    Supplementary power connectors 1 x 6-pin
    Memory type GDDR5 GDDR5
    Maximum RAM amount 1 GB 2 GB
    Display Connectors No outputs 1x DVI, 1x HDMI, 2x mini-DisplayPort
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    • Mobility Radeon HD 4870 is connected by PCIe 2.0 x16, and Radeon R7 250X uses PCIe 3.0 x16 interface.
    • Radeon R7 250X has 1 GB more memory, than Mobility Radeon HD 4870.
    • Mobility Radeon HD 4870 is used in Laptops, and Radeon R7 250X - in Desktops.
    • Mobility Radeon HD 4870 is build with Terascale 1 architecture, and Radeon R7 250X - with GCN 1.0.
    • Mobility Radeon HD 4870 is manufactured by 55 nm process technology, and Radeon R7 250X - by 28 nm process technology.
    • Memory clock speed of Radeon R7 250X is 737 MHz higher, than Mobility Radeon HD 4870.

    Game benchmarks

    high / 1080p 7−8 10−12
    ultra / 1080p 4−5 6−7
    QHD / 1440p 0−1 1−2
    low / 720p 16−18 24−27
    medium / 1080p 8−9 14−16
    The average gaming FPS of Radeon R7 250X in Assassin's Creed Odyssey is 55% more, than Mobility Radeon HD 4870.

    Full Specs

      Mobility Radeon HD 4870 Radeon R7 250X
    Architecture Terascale 1 GCN 1.0
    Code name M98-XT Cape Verde
    Type Laptop Desktop
    Release date 9 January 2009 13 February 2014
    Pipelines 800 640
    Core clock speed 550 MHz
    Boost Clock 1000 MHz
    Transistor count 956 million 1,500 million
    Manufacturing process technology 55 nm 28 nm
    Texture fill rate 22.00 38.00
    Floating-point performance 880.0 gflops 1,216 gflops
    Length 210 mm
    Memory bus width 256 Bit 128 Bit
    Memory clock speed 888 MHz 1625 MHz
    Memory bandwidth 56.83 GB/s 96 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 3.0
    HDMI +
    Bitcoin / BTC (SHA256) 152 Mh/s
    Laptop size large
    Eyefinity +
    Design reference
    CrossFire +
    DDMA audio +
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