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

    Find out if it is worth upgrading your current GPU setup by comparing Maxwell GPU Surface Book 940M GDDR5 and Radeon HD 6990M. 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 Maxwell GPU Surface Book 940M GDDR5 and Radeon HD 6990M. 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.
    Maxwell GPU Surface Book 940M GDDR5 Check Price
    Radeon HD 6990M Check Price

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

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

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

    Main Specs

      Maxwell GPU Surface Book 940M GDDR5 Radeon HD 6990M
    Power consumption (TDP) 100 Watt
    Interface MXM-B (3.0)
    Supplementary power connectors None
    Memory type GDDR5 GDDR5
    Maximum RAM amount 1 GB 2 GB
    Display Connectors No outputs
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    • Radeon HD 6990M 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 - with Terascale 2.
    • Core clock speed of Maxwell GPU Surface Book 940M GDDR5 is 239 MHz higher, than Radeon HD 6990M.
    • Maxwell GPU Surface Book 940M GDDR5 is manufactured by 28 nm process technology, and Radeon HD 6990M - by 40 nm process technology.
    • Memory clock speed of Maxwell GPU Surface Book 940M GDDR5 is 4112 MHz higher, than Radeon HD 6990M.

    Game benchmarks

    high / 1080p 9−10 14−16
    ultra / 1080p 5−6 8−9
    QHD / 1440p 0−1 3−4
    low / 720p 21−24 30−33
    medium / 1080p 12−14 16−18
    The average gaming FPS of Radeon HD 6990M in Assassin's Creed Odyssey is 50% more, than Maxwell GPU Surface Book 940M GDDR5.

    Full Specs

      Maxwell GPU Surface Book 940M GDDR5 Radeon HD 6990M
    Architecture Maxwell Terascale 2
    Code name Surface Book Blackcomb XTX
    Type Laptop Laptop
    Release date 1 October 2015 12 July 2011
    Pipelines 384 1120
    Core clock speed 954 MHz 715 MHz
    Boost Clock 993 MHz
    Transistor count 1,700 million
    Manufacturing process technology 28 nm 40 nm
    Texture fill rate 40.04
    Floating-point performance 1,601.6 gflops
    Memory bus width 64 Bit 256 Bit
    Memory clock speed 5012 MHz 900 MHz
    Memory bandwidth 115.2 GB/s
    Shared memory - -
    DirectX DirectX 12 (FL 11_0), Shader 5.0 11.2 (11_0)
    Shader Model 5.0
    OpenGL 4.4
    OpenCL 1.2
    Vulkan N/A
    CUDA +
    Laptop size large
    Optimus +
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