Subscribe to our YouTube channel ×

    Iris Plus Graphics 645 vs Radeon HD 6990M Crossfire

    Find out if it is worth upgrading your current GPU setup by comparing Iris Plus Graphics 645 and Radeon HD 6990M Crossfire. 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 Iris Plus Graphics 645 and Radeon HD 6990M Crossfire. 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.
    Iris Plus Graphics 645 Check Price
    Radeon HD 6990M Crossfire Check Price

    Iris Plus Graphics 645 and Radeon HD 6990M Crossfire are Laptop Graphics Cards

    Note: Iris Plus Graphics 645 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 Iris Plus Graphics 645 or Radeon HD 6990M Crossfire here:

    Iris Plus Graphics 645 Laptops
    Radeon HD 6990M Crossfire Laptops

    Main Specs

      Iris Plus Graphics 645 Radeon HD 6990M Crossfire
    Power consumption (TDP) 15 Watt
    Interface PCIe 3.0 x1
    Memory type DDR3/DDR4 GDDR5
    Maximum RAM amount 2x2 GB
    Display Connectors No outputs
      Check Price Check Price
    • Both cards are used in Laptops.
    • Iris Plus Graphics 645 is build with Gen. 9.5 Coffee Lake architecture, and Radeon HD 6990M Crossfire - with Terascale 2.
    • Core clock speed of Radeon HD 6990M Crossfire is 415 MHz higher, than Iris Plus Graphics 645.
    • Iris Plus Graphics 645 is manufactured by 14 nm process technology, and Radeon HD 6990M Crossfire - by 40 nm process technology.

    Game benchmarks

    high / 1080p 4−5 35−40
    ultra / 1080p 2−3 21−24
    QHD / 1440p 0−1 16−18
    4K / 2160p − 10−11
    low / 720p 12−14 60−65
    medium / 1080p 5−6 40−45
    The average gaming FPS of Radeon HD 6990M Crossfire in Assassin's Creed Odyssey is 583% more, than Iris Plus Graphics 645.

    Full Specs

      Iris Plus Graphics 645 Radeon HD 6990M Crossfire
    Architecture Gen. 9.5 Coffee Lake Terascale 2
    Code name Kaby Lake GT3e Blackcomb XTX
    Type Laptop Laptop
    Release date 10 July 2019 12 July 2011
    Pipelines 48 2240
    Core clock speed 300 MHz 715 MHz
    Boost Clock 1150 MHz
    Transistor count 2x1700 Million
    Manufacturing process technology 14 nm 40 nm
    Texture fill rate 50.40
    Memory bus width 256 Bit
    Memory clock speed 900 MHz
    Shared memory + -
    DirectX 12 (12_1) DirectX 11, Shader 5.0
    Shader Model 6.4
    OpenGL 4.6
    OpenCL 2.1
    Vulkan 1.1.103
    Laptop size large
    Quick Sync +
      Check Price Check Price

    Similar compares