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    Radeon HD 6990M Crossfire vs Radeon R7 Carrizo

    When comparing Radeon HD 6990M Crossfire and Radeon R7 Carrizo, 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 Carrizo 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 Carrizo Check Price

    Radeon HD 6990M Crossfire and Radeon R7 Carrizo are Laptop Graphics Cards

    Note: Radeon HD 6990M Crossfire and Radeon R7 Carrizo are only used in laptop graphics. They have 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 or Radeon R7 Carrizo here:

    Radeon HD 6990M Crossfire Laptops
    Radeon R7 Carrizo Laptops

    Main Specs

      Radeon HD 6990M Crossfire Radeon R7 Carrizo
    Power consumption (TDP) 12-35 Watt
    Memory type GDDR5
    Maximum RAM amount 2x2 GB
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    • Both cards are used in Laptops.
    • Radeon HD 6990M Crossfire is build with Terascale 2 architecture, and Radeon R7 Carrizo - with GCN 1.2/2.0.
    • Radeon HD 6990M Crossfire is manufactured by 40 nm process technology, and Radeon R7 Carrizo - by 28 nm process technology.

    Game benchmarks

    high / 1080p 35−40 2−3
    ultra / 1080p 21−24 0−1
    QHD / 1440p 16−18 0−1
    4K / 2160p 10−11 −
    low / 720p 60−65 12−14
    medium / 1080p 40−45 5−6
    The average gaming FPS of Radeon HD 6990M Crossfire in Assassin's Creed Odyssey is 571% more, than Radeon R7 Carrizo.

    Full Specs

      Radeon HD 6990M Crossfire Radeon R7 Carrizo
    Architecture Terascale 2 GCN 1.2/2.0
    Code name Blackcomb XTX Carrizo
    Type Laptop Laptop
    Release date 12 July 2011 4 June 2015
    Pipelines 2240 512
    Core clock speed 715 MHz
    Boost Clock 800 MHz
    Transistor count 2x1700 Million 2410 Million
    Manufacturing process technology 40 nm 28 nm
    Memory bus width 256 Bit 64/128 Bit
    Memory clock speed 900 MHz
    Shared memory - +
    DirectX DirectX 11, Shader 5.0 DirectX 12 (FL 12_0)
    Laptop size large medium sized
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