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    Mobility Radeon HD 4870 vs Radeon HD 4830

    If you are going to buy a new graphics card and are choosing between Mobility Radeon HD 4870 and Radeon HD 4830, 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 stacks up against Radeon HD 4830, check out specs charts below.
    Mobility Radeon HD 4870 Check Price
    Radeon HD 4830

    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 HD 4830
    Power consumption (TDP) 95 Watt
    Interface PCIe 2.0 x16 PCIe 2.0 x16
    Supplementary power connectors 1x 6-pin
    Memory type GDDR5 GDDR3
    Maximum RAM amount 1 GB 512 MB
    Display Connectors No outputs 2x DVI, 1x S-Video
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    • Both video cards are using PCIe 2.0 x16 interface connection to a motherboard.
    • Radeon HD 4830 has 511 GB more memory, than Mobility Radeon HD 4870.
    • Mobility Radeon HD 4870 is used in Laptops, and Radeon HD 4830 - in Desktops.
    • Mobility Radeon HD 4870 is build with Terascale 1 architecture, and Radeon HD 4830 - with TeraScale.
    • Core clock speed of Radeon HD 4830 is 25 MHz higher, than Mobility Radeon HD 4870.
    • Mobility Radeon HD 4870 and Radeon HD 4830 are manufactured by 55 nm process technology.
    • Memory clock speed of Radeon HD 4830 is 912 MHz higher, than Mobility Radeon HD 4870.

    Game benchmarks

    high / 1080p 7−8 0−1
    ultra / 1080p 4−5 0−1
    QHD / 1440p 0−1 0−1
    low / 720p 16−18 10−12
    medium / 1080p 8−9 2−3
    The average gaming FPS of Mobility Radeon HD 4870 in Assassin's Creed Odyssey is 100% more, than Radeon HD 4830.

    Full Specs

      Mobility Radeon HD 4870 Radeon HD 4830
    Architecture Terascale 1 TeraScale
    Code name M98-XT RV770
    Type Laptop Desktop
    Release date 9 January 2009 21 October 2008
    Pipelines 800 640
    Core clock speed 550 MHz 575 MHz
    Transistor count 956 million 956 million
    Manufacturing process technology 55 nm 55 nm
    Texture fill rate 22.00 18.40
    Floating-point performance 880.0 gflops 736.0 gflops
    Length 246 mm
    Memory bus width 256 Bit 256 Bit
    Memory clock speed 888 MHz 1800 MHz
    Memory bandwidth 56.83 GB/s 57.6 GB/s
    Shared memory -
    DirectX 10.1 (10_1) 10.1 (10_1)
    Shader Model 4.1 4.1
    OpenGL 3.3 3.3
    OpenCL 1.1 1.1
    Vulkan N/A N/A
    Laptop size large
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