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    GeForce GT 640M vs Radeon HD 4770

    In this comparison between GeForce GT 640M and Radeon HD 4770 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 4770 will be their preference. Study the comparison tables below and make your choice.
    GeForce GT 640M Check Price
    Radeon HD 4770

    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 4770
    Power consumption (TDP) 32 Watt 80 Watt
    Interface PCIe 3.0 x16 PCIe 2.0 x16
    Supplementary power connectors 1x 6-pin
    Memory type DDR3\GDDR5 GDDR5
    Maximum RAM amount 2 GB 512 MB
    Display Connectors No outputs 2x DVI, 1x S-Video
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    • Radeon HD 4770 has 150% more power consumption, than GeForce GT 640M.
    • GeForce GT 640M is connected by PCIe 3.0 x16, and Radeon HD 4770 uses PCIe 2.0 x16 interface.
    • Radeon HD 4770 has 510 GB more memory, than GeForce GT 640M.
    • GeForce GT 640M is used in Laptops, and Radeon HD 4770 - in Desktops.
    • GeForce GT 640M is build with Kepler architecture, and Radeon HD 4770 - with TeraScale.
    • GeForce GT 640M is manufactured by 28 nm process technology, and Radeon HD 4770 - by 40 nm process technology.
    • Memory clock speed of Radeon HD 4770 is 1400 MHz higher, than GeForce GT 640M.

    Game benchmarks

    high / 1080p 0−1 1−2
    ultra / 1080p 0−1 0−1
    QHD / 1440p 0−1 0−1
    low / 720p 10−12 10−12
    medium / 1080p 2−3 2−3
    GeForce GT 640M and Radeon HD 4770 have the same average FPS in Assassin's Creed Odyssey.

    Full Specs

      GeForce GT 640M Radeon HD 4770
    Architecture Kepler TeraScale
    Code name N13P-GS RV740
    Type Laptop Desktop
    Release date 22 March 2012 28 April 2009
    Pipelines 384 640
    Core clock speed 750 MHz
    Boost Clock 645 MHz
    Transistor count 1,270 million 826 million
    Manufacturing process technology 28 nm 40 nm
    Texture fill rate 24.00
    Floating-point performance 480.0 gflops 960.0 gflops
    Length 203 mm
    Memory bus width 128bit 128 Bit
    Memory clock speed 1800 - 4000 MHz 3200 MHz
    Memory bandwidth 51.2 GB/s
    Shared memory -
    DirectX 12 API 10.1 (10_1)
    Shader Model 5.1 4.1
    OpenGL 4.5 3.3
    OpenCL 1.1 1.1
    Vulkan 1.1.126 N/A
    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
    Laptop size medium sized
    Optimus +
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