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    Radeon HD 6990M Crossfire vs Radeon R7 250X

    When comparing Radeon HD 6990M Crossfire 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 Radeon HD 6990M Crossfire and Radeon R7 250X is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    Radeon HD 6990M Crossfire Check Price
    Radeon R7 250X Check Price

    Radeon HD 6990M Crossfire is a Laptop Graphics Card

    Note: Radeon HD 6990M Crossfire 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 Radeon HD 6990M Crossfire here:

    Radeon HD 6990M Crossfire Laptops

    Main Specs

      Radeon HD 6990M Crossfire Radeon R7 250X
    Power consumption (TDP) 80 Watt
    Interface PCIe 3.0 x16
    Supplementary power connectors 1 x 6-pin
    Memory type GDDR5 GDDR5
    Maximum RAM amount 2x2 GB 2 GB
    Display Connectors 1x DVI, 1x HDMI, 2x mini-DisplayPort
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    • Radeon HD 6990M Crossfire and Radeon R7 250X have maximum RAM of 2 GB.
    • Radeon HD 6990M Crossfire is used in Laptops, and Radeon R7 250X - in Desktops.
    • Radeon HD 6990M Crossfire is build with Terascale 2 architecture, and Radeon R7 250X - with GCN 1.0.
    • Radeon HD 6990M Crossfire is manufactured by 40 nm process technology, and Radeon R7 250X - by 28 nm process technology.
    • Memory clock speed of Radeon R7 250X is 725 MHz higher, than Radeon HD 6990M Crossfire.

    Game benchmarks

    high / 1080p 35−40 10−12
    ultra / 1080p 21−24 6−7
    QHD / 1440p 16−18 1−2
    4K / 2160p 10−11 −
    low / 720p 60−65 24−27
    medium / 1080p 40−45 14−16
    The average gaming FPS of Radeon HD 6990M Crossfire in Assassin's Creed Odyssey is 227% more, than Radeon R7 250X.

    Full Specs

      Radeon HD 6990M Crossfire Radeon R7 250X
    Architecture Terascale 2 GCN 1.0
    Code name Blackcomb XTX Cape Verde
    Type Laptop Desktop
    Release date 12 July 2011 13 February 2014
    Pipelines 2240 640
    Core clock speed 715 MHz
    Boost Clock 1000 MHz
    Transistor count 2x1700 Million 1,500 million
    Manufacturing process technology 40 nm 28 nm
    Texture fill rate 38.00
    Floating-point performance 1,216 gflops
    Length 210 mm
    Memory bus width 256 Bit 128 Bit
    Memory clock speed 900 MHz 1625 MHz
    Memory bandwidth 96 GB/s
    Shared memory -
    DirectX DirectX 11, Shader 5.0
    Shader Model 5.1
    OpenGL 4.6
    OpenCL 1.2
    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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