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    Radeon HD 7970M Crossfire vs Radeon RX 640

    In this comparison between Radeon HD 7970M Crossfire and Radeon RX 640 you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people Radeon HD 7970M Crossfire will be the best choice, for others Radeon RX 640 will be their preference. Study the comparison tables below and make your choice.
    Radeon HD 7970M Crossfire Check Price
    Radeon RX 640 Check Price

    Radeon HD 7970M Crossfire and Radeon RX 640 are Laptop Graphics Cards

    Note: Radeon HD 7970M Crossfire and Radeon RX 640 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 7970M Crossfire or Radeon RX 640 here:

    Radeon HD 7970M Crossfire Laptops
    Radeon RX 640 Laptops

    Main Specs

      Radeon HD 7970M Crossfire Radeon RX 640
    Power consumption (TDP) 200 Watt 50 Watt
    Interface PCIe 3.0 x8
    Supplementary power connectors None
    Memory type GDDR5 GDDR5
    Maximum RAM amount 4 GB
    Display Connectors 1x DVI, 1x HDMI, 1x DisplayPort
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    • Radeon HD 7970M Crossfire has 300% more power consumption, than Radeon RX 640.
    • Both cards are used in Laptops.
    • Radeon HD 7970M Crossfire is build with GCN architecture, and Radeon RX 640 - with Polaris.
    • Core clock speed of Radeon RX 640 is 368 MHz higher, than Radeon HD 7970M Crossfire.
    • Radeon HD 7970M Crossfire is manufactured by 28 nm process technology, and Radeon RX 640 - by 14 nm process technology.
    • Memory clock speed of Radeon RX 640 is 1200 MHz higher, than Radeon HD 7970M Crossfire.

    Game benchmarks

    high / 1080p 35−40 5−6
    ultra / 1080p 21−24 3−4
    QHD / 1440p 16−18 2−3
    4K / 2160p 10−11 −
    low / 720p 60−65 16−18
    medium / 1080p 40−45 7−8
    The average gaming FPS of Radeon HD 7970M Crossfire in Assassin's Creed Odyssey is 414% more, than Radeon RX 640.

    Full Specs

      Radeon HD 7970M Crossfire Radeon RX 640
    Architecture GCN Polaris
    Code name Wimbledon XT Polaris 12
    Type Laptop Laptop
    Release date 1 May 2012 12 August 2019
    Pipelines 2560 640
    Core clock speed 850 MHz 1218 MHz
    Boost Clock 1218 MHz
    Transistor count 2,200 million
    Manufacturing process technology 28 nm 14 nm
    Texture fill rate 38.98
    Memory bus width 2x 256 Bit 64 Bit
    Memory clock speed 4800 MHz 6000 MHz
    Memory bandwidth 112.0 GB/s
    Shared memory - -
    DirectX DirectX 11.1, Shader 5.0 12 (12_0)
    Shader Model 6.4
    OpenGL 4.6
    OpenCL 2.0
    Vulkan 1.2.131
    FreeSync +
    Laptop size large large
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