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    GeForce GT 640M vs Radeon HD 7850

    In this comparison between GeForce GT 640M and Radeon HD 7850 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 7850 will be their preference. Study the comparison tables below and make your choice.
    GeForce GT 640M Check Price
    Radeon HD 7850 Check Price

    GeForce GT 640M is a Laptop Graphics Card

    Note: GeForce GT 640M is only used in laptop graphics. It has 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 here:

    GeForce GT 640M Laptops

    Main Specs

      GeForce GT 640M Radeon HD 7850
    Power consumption (TDP) 32 Watt 225 Watt
    Interface PCIe 3.0 x16 PCIe 3.0 x16
    Supplementary power connectors 1x 6-pin
    Memory type DDR3\GDDR5 GDDR5
    Maximum RAM amount 2 GB 2 GB
    Display Connectors No outputs 1x DVI, 1x HDMI, 2x mini-DisplayPort
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    • Radeon HD 7850 has 603% more power consumption, than GeForce GT 640M.
    • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
    • GeForce GT 640M and Radeon HD 7850 have maximum RAM of 2 GB.
    • GeForce GT 640M is used in Laptops, and Radeon HD 7850 - in Desktops.
    • GeForce GT 640M is build with Kepler architecture, and Radeon HD 7850 - with GCN 1.0.
    • GeForce GT 640M and Radeon HD 7850 are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce GT 640M is 600 MHz higher, than Radeon HD 7850.

    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 24−27
    The average gaming FPS of Radeon HD 7850 in Assassin's Creed Odyssey is 416% more, than GeForce GT 640M.

    Full Specs

      GeForce GT 640M Radeon HD 7850
    Architecture Kepler GCN 1.0
    Code name N13P-GS Pitcairn
    Type Laptop Desktop
    Release date 22 March 2012 5 March 2012
    Pipelines 384 1024
    Boost Clock 645 MHz 1000 MHz
    Transistor count 1,270 million 2,800 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 55.04
    Floating-point performance 480.0 gflops 1,761 gflops
    Length 210 mm
    Memory bus width 128bit 256 Bit
    Memory clock speed 1800 - 4000 MHz 1200 MHz
    Memory bandwidth 153.6 GB/s
    Shared memory -
    DirectX 12 API
    Shader Model 5.1 5.1
    OpenGL 4.5 4.6
    OpenCL 1.1 1.2
    Vulkan 1.1.126
    CUDA +
    FreeSync +
    CUDA cores 384
    Bus support PCI Express 2.0, PCI Express 3.0 PCIe 2.1 x16
    HDMI + +
    HDCP +
    Maximum VGA resolution Up to 2048x1536
    3D Blu-Ray +
    Bitcoin / BTC (SHA256) 18 Mh/s 249 Mh/s
    Laptop size medium sized
    Optimus +
    Eyefinity +
    Design reference
    CrossFire +
    Ethereum / ETH (DaggerHashimoto) 12.5 Mh/s
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