Subscribe to our YouTube channel ×

    Maxwell GPU Surface Book 940M GDDR5 vs Radeon HD 6990M Crossfire

    When comparing Maxwell GPU Surface Book 940M GDDR5 and Radeon HD 6990M Crossfire, 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 Maxwell GPU Surface Book 940M GDDR5 and Radeon HD 6990M Crossfire is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    Maxwell GPU Surface Book 940M GDDR5 Check Price
    Radeon HD 6990M Crossfire Check Price

    Maxwell GPU Surface Book 940M GDDR5 and Radeon HD 6990M Crossfire are Laptop Graphics Cards

    Note: Maxwell GPU Surface Book 940M GDDR5 and Radeon HD 6990M Crossfire 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 Maxwell GPU Surface Book 940M GDDR5 or Radeon HD 6990M Crossfire here:

    Maxwell GPU Surface Book 940M GDDR5 Laptops
    Radeon HD 6990M Crossfire Laptops

    Main Specs

      Maxwell GPU Surface Book 940M GDDR5 Radeon HD 6990M Crossfire
    Memory type GDDR5 GDDR5
    Maximum RAM amount 1 GB 2x2 GB
      Check Price Check Price
    • Radeon HD 6990M Crossfire has 1 GB more memory, than Maxwell GPU Surface Book 940M GDDR5.
    • Both cards are used in Laptops.
    • Maxwell GPU Surface Book 940M GDDR5 is build with Maxwell architecture, and Radeon HD 6990M Crossfire - with Terascale 2.
    • Core clock speed of Maxwell GPU Surface Book 940M GDDR5 is 239 MHz higher, than Radeon HD 6990M Crossfire.
    • Maxwell GPU Surface Book 940M GDDR5 is manufactured by 28 nm process technology, and Radeon HD 6990M Crossfire - by 40 nm process technology.
    • Memory clock speed of Maxwell GPU Surface Book 940M GDDR5 is 4112 MHz higher, than Radeon HD 6990M Crossfire.

    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 HD 6990M Crossfire in Assassin's Creed Odyssey is 241% more, than Maxwell GPU Surface Book 940M GDDR5.

    Full Specs

      Maxwell GPU Surface Book 940M GDDR5 Radeon HD 6990M Crossfire
    Architecture Maxwell Terascale 2
    Code name Surface Book Blackcomb XTX
    Type Laptop Laptop
    Release date 1 October 2015 12 July 2011
    Pipelines 384 2240
    Core clock speed 954 MHz 715 MHz
    Boost Clock 993 MHz
    Transistor count 2x1700 Million
    Manufacturing process technology 28 nm 40 nm
    Memory bus width 64 Bit 256 Bit
    Memory clock speed 5012 MHz 900 MHz
    Shared memory - -
    DirectX DirectX 12 (FL 11_0), Shader 5.0 DirectX 11, Shader 5.0
    CUDA +
    Laptop size large
    Optimus +
      Check Price Check Price

    Similar compares