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    GeForce GT 640M LE vs Radeon HD 6770

    If you are going to buy a new graphics card and are choosing between GeForce GT 640M LE and Radeon HD 6770, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce GT 640M LE stacks up against Radeon HD 6770, check out specs charts below.
    GeForce GT 640M LE Check Price
    Radeon HD 6770 Check Price

    GeForce GT 640M LE is a Laptop Graphics Card

    Note: GeForce GT 640M LE 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 LE here:

    GeForce GT 640M LE Laptops

    Main Specs

      GeForce GT 640M LE Radeon HD 6770
    Power consumption (TDP) 20 Watt 108 Watt
    Interface PCIe 2.0 x16 PCIe 2.0 x16
    Supplementary power connectors 1x 6-pin
    Memory type DDR3\DDR5 GDDR5
    Maximum RAM amount 2 GB 1 GB
    Display Connectors No outputs 2x DVI, 1x HDMI, 2x mini-DisplayPort
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    • Radeon HD 6770 has 440% more power consumption, than GeForce GT 640M LE.
    • Both video cards are using PCIe 2.0 x16 interface connection to a motherboard.
    • GeForce GT 640M LE has 1 GB more memory, than Radeon HD 6770.
    • GeForce GT 640M LE is used in Laptops, and Radeon HD 6770 - in Desktops.
    • GeForce GT 640M LE is build with Fermi / Kepler architecture, and Radeon HD 6770 - with TeraScale 2.
    • GeForce GT 640M LE is manufactured by 28 nm process technology, and Radeon HD 6770 - by 40 nm process technology.
    • Memory clock speed of GeForce GT 640M LE is 750 MHz higher, than Radeon HD 6770.

    Game benchmarks

    high / 1080p 0−1 3−4
    ultra / 1080p − 1−2
    QHD / 1440p 0−1 0−1
    low / 720p 1−2 14−16
    medium / 1080p 0−1 5−6
    The average gaming FPS of Radeon HD 6770 in Assassin's Creed Odyssey is 1400% more, than GeForce GT 640M LE.

    Full Specs

      GeForce GT 640M LE Radeon HD 6770
    Architecture Fermi / Kepler TeraScale 2
    Code name N13P-LP Juniper
    Type Laptop Desktop
    Release date 22 March 2012 21 January 2011
    Pipelines 384 800
    Boost Clock 900 MHz
    Transistor count 585 million 1,040 million
    Manufacturing process technology 28 nm 40 nm
    Texture fill rate 34.00
    Floating-point performance 384.0 gflops 1,360.0 gflops
    Length 198 mm
    Memory bus width 128bit 128 Bit
    Memory clock speed 1800 - 4000 MHz 1050 MHz
    Memory bandwidth 76.8 GB/s
    Shared memory -
    DirectX 12 API
    Shader Model 5.1 5.0
    OpenGL 4.5 4.4
    OpenCL 1.1 1.2
    Vulkan N/A
    CUDA +
    CUDA cores Up to 384
    Bus support PCI Express 2.0, PCI Express 3.0 PCIe 2.0 x16
    HDMI + +
    HDCP +
    Maximum VGA resolution Up to 2048x1536
    3D Blu-Ray +
    Bitcoin / BTC (SHA256) 14 Mh/s 118 Mh/s
    Laptop size medium sized
    Optimus +
    Eyefinity +
    Design reference
    CrossFire +
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