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    Mobility Radeon HD 4870 X2 vs Radeon R9 280X

    If you are going to buy a new graphics card and are choosing between Mobility Radeon HD 4870 X2 and Radeon R9 280X, 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 R9 280X, check out specs charts below.
    Mobility Radeon HD 4870 X2 Check Price
    Radeon R9 280X 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 R9 280X
    Power consumption (TDP) 250 Watt
    Interface PCIe 2.0 x16 PCIe 3.0 x16
    Supplementary power connectors 1 x 6-pin + 1 x 8-pin
    Memory type GDDR3, GDDR5 GDDR5
    Maximum RAM amount 2 GB 3 GB
    Display Connectors No outputs 2x DVI, 1x HDMI, 1x DisplayPort
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    • Mobility Radeon HD 4870 X2 is connected by PCIe 2.0 x16, and Radeon R9 280X uses PCIe 3.0 x16 interface.
    • Radeon R9 280X has 1 GB more memory, than Mobility Radeon HD 4870 X2.
    • Mobility Radeon HD 4870 X2 is used in Laptops, and Radeon R9 280X - in Desktops.
    • Mobility Radeon HD 4870 X2 is build with Terascale 1 architecture, and Radeon R9 280X - with GCN.
    • Mobility Radeon HD 4870 X2 is manufactured by 55 nm process technology, and Radeon R9 280X - by 28 nm process technology.

    Game benchmarks

    high / 1080p 9−10 35−40
    ultra / 1080p 5−6 21−24
    QHD / 1440p 0−1 16−18
    4K / 2160p − 10−11
    low / 720p 21−24 60−65
    medium / 1080p 12−14 40−45
    The average gaming FPS of Radeon R9 280X in Assassin's Creed Odyssey is 241% more, than Mobility Radeon HD 4870 X2.

    Full Specs

      Mobility Radeon HD 4870 X2 Radeon R9 280X
    Architecture Terascale 1 GCN
    Code name M98-XT Thaiti XTL
    Type Laptop Desktop
    Release date 9 January 2009 8 October 2013
    Pipelines 1600 2048
    Core clock speed 550 MHz
    Boost Clock 1000 MHz
    Transistor count 956 million 4,313 million
    Manufacturing process technology 55 nm 28 nm
    Texture fill rate 22.00 128.0
    Floating-point performance 2x 880.0 gflops 4,096 gflops
    Length 275 mm
    Memory bus width 256 Bit 384 Bit
    Memory clock speed 888 MHz
    Memory bandwidth 89.6 GB/s 288 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 +
    Monero / XMR (CryptoNight) 0.5 kh/s
    FreeSync +
    Bus support PCIe 3.0
    HDMI +
    Bitcoin / BTC (SHA256) 494 Mh/s
    Laptop size large
    Eyefinity +
    HD3D +
    TrueAudio +
    Design reference
    DisplayPort support +
    CrossFire +
    DDMA audio +
    Decred / DCR (Decred) 1.07 Gh/s
    Ethereum / ETH (DaggerHashimoto) 14.42 Mh/s
    Zcash / ZEC (Equihash) 285 Sol/s
    AppAcceleration +
    LiquidVR +
    TressFX +
    UVD +
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