Subscribe to our YouTube channel ×

    GeForce GT 640M vs Radeon HD 7970M

    In this comparison between GeForce GT 640M and Radeon HD 7970M 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 GeForce GT 640M will be the best choice, for others Radeon HD 7970M will be their preference. Study the comparison tables below and make your choice.
    GeForce GT 640M Check Price
    Radeon HD 7970M Check Price

    GeForce GT 640M and Radeon HD 7970M are Laptop Graphics Cards

    Note: GeForce GT 640M and Radeon HD 7970M 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 GeForce GT 640M or Radeon HD 7970M here:

    GeForce GT 640M Laptops
    Radeon HD 7970M Laptops

    Main Specs

      GeForce GT 640M Radeon HD 7970M
    Power consumption (TDP) 32 Watt 100 Watt
    Interface PCIe 3.0 x16 MXM-B (3.0)
    Supplementary power connectors None
    Memory type DDR3\GDDR5 GDDR5
    Maximum RAM amount 2 GB 2 GB
    Display Connectors No outputs No outputs
      Check Price Check Price
    • Radeon HD 7970M has 212% more power consumption, than GeForce GT 640M.
    • GeForce GT 640M is connected by PCIe 3.0 x16, and Radeon HD 7970M uses MXM-B (3.0) interface.
    • GeForce GT 640M and Radeon HD 7970M have maximum RAM of 2 GB.
    • Both cards are used in Laptops.
    • GeForce GT 640M is build with Kepler architecture, and Radeon HD 7970M - with GCN.
    • GeForce GT 640M and Radeon HD 7970M are manufactured by 28 nm process technology.
    • Memory clock speed of Radeon HD 7970M is 3000 MHz higher, than GeForce GT 640M.

    Game benchmarks

    high / 1080p 0−1 18−20
    ultra / 1080p 0−1 10−12
    QHD / 1440p 0−1 5−6
    4K / 2160p − 4−5
    low / 720p 10−12 35−40
    medium / 1080p 2−3 21−24
    The average gaming FPS of Radeon HD 7970M in Assassin's Creed Odyssey is 400% more, than GeForce GT 640M.

    Full Specs

      GeForce GT 640M Radeon HD 7970M
    Architecture Kepler GCN
    Code name N13P-GS Wimbledon XT
    Type Laptop Laptop
    Release date 22 March 2012 1 May 2012
    Pipelines 384 1280
    Core clock speed 850 MHz
    Boost Clock 645 MHz
    Transistor count 1,270 million 2,800 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 68.00
    Floating-point performance 480.0 gflops 2,176 gflops
    Memory bus width 128bit 256 Bit
    Memory clock speed 1800 - 4000 MHz 4800 MHz
    Memory bandwidth 153.6 GB/s
    Shared memory - -
    DirectX 12 API 12 (11_1)
    Shader Model 5.1 5.1
    OpenGL 4.5 4.6
    OpenCL 1.1 1.2
    Vulkan 1.1.126 1.2.131
    CUDA +
    CUDA cores 384
    Bus support PCI Express 2.0, PCI Express 3.0
    HDMI +
    HDCP +
    Maximum VGA resolution Up to 2048x1536
    3D Blu-Ray +
    Bitcoin / BTC (SHA256) 18 Mh/s 254 Mh/s
    Laptop size medium sized large
    Optimus +
      Check Price Check Price

    Similar compares