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    Mobility Radeon HD 3870 X2 vs Radeon R9 290X

    Find out if it is worth upgrading your current GPU setup by comparing Mobility Radeon HD 3870 X2 and Radeon R9 290X. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between Mobility Radeon HD 3870 X2 and Radeon R9 290X. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.
    Mobility Radeon HD 3870 X2 Check Price
    Radeon R9 290X Check Price

    Mobility Radeon HD 3870 X2 is a Laptop Graphics Card

    Note: Mobility Radeon HD 3870 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 3870 X2 here:

    Mobility Radeon HD 3870 X2 Laptops

    Main Specs

      Mobility Radeon HD 3870 X2 Radeon R9 290X
    Power consumption (TDP) 110 Watt 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
    Maximum RAM amount 512 MB 4 GB
    Display Connectors No outputs 2x DVI, 1x HDMI, 1x DisplayPort
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    • Radeon R9 290X has 127% more power consumption, than Mobility Radeon HD 3870 X2.
    • Mobility Radeon HD 3870 X2 is connected by PCIe 2.0 x16, and Radeon R9 290X uses PCIe 3.0 x16 interface.
    • Mobility Radeon HD 3870 X2 has 508 GB more memory, than Radeon R9 290X.
    • Mobility Radeon HD 3870 X2 is used in Laptops, and Radeon R9 290X - in Desktops.
    • Mobility Radeon HD 3870 X2 is build with RV6xx architecture, and Radeon R9 290X - with GCN.
    • Mobility Radeon HD 3870 X2 is manufactured by 55 nm process technology, and Radeon R9 290X - by 28 nm process technology.
    • Memory clock speed of Radeon R9 290X is 400 MHz higher, than Mobility Radeon HD 3870 X2.

    Game benchmarks

    high / 1080p 6−7 35−40
    ultra / 1080p 4−5 24−27
    QHD / 1440p 0−1 18−20
    4K / 2160p − 10−11
    low / 720p 16−18 60−65
    medium / 1080p 8−9 45−50
    The average gaming FPS of Radeon R9 290X in Assassin's Creed Odyssey is 377% more, than Mobility Radeon HD 3870 X2.

    Full Specs

      Mobility Radeon HD 3870 X2 Radeon R9 290X
    Architecture RV6xx GCN
    Code name M88-XT CF Hawaii XT
    Type Laptop Desktop
    Release date 1 September 2008 24 October 2013
    Pipelines 640 2816
    Core clock speed 660 MHz
    Boost Clock 947 MHz
    Transistor count 666 million 6,200 million
    Manufacturing process technology 55 nm 28 nm
    Texture fill rate 10.56 176.0
    Floating-point performance 2x 422.4 gflops 5,632 gflops
    Length 275 mm
    Memory bus width 256 Bit 512 Bit
    Memory clock speed 850 MHz 1250 MHz
    Memory bandwidth 54.4 GB/s 320 GB/s
    Shared memory - -
    DirectX 10.1 (10_1)
    Shader Model 4.1 6.3
    OpenGL 3.3 4.6
    OpenCL N/A 2.0
    Vulkan N/A +
    Monero / XMR (CryptoNight) 0.76 kh/s
    FreeSync +
    Bus support PCIe 3.0
    HDMI +
    Bitcoin / BTC (SHA256) 623 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) 25.75 Mh/s
    Zcash / ZEC (Equihash) 350 Sol/s
    AppAcceleration +
    LiquidVR +
    TressFX +
    UVD +
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