Subscribe to our YouTube channel ×

    GeForce GT 645M vs Radeon HD 4850 X2

    Find out if it is worth upgrading your current GPU setup by comparing GeForce GT 645M and Radeon HD 4850 X2. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between GeForce GT 645M and Radeon HD 4850 X2. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.
    GeForce GT 645M Check Price
    Radeon HD 4850 X2

    GeForce GT 645M is a Laptop Graphics Card

    Note: GeForce GT 645M 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 645M here:

    GeForce GT 645M Laptops

    Main Specs

      GeForce GT 645M Radeon HD 4850 X2
    Power consumption (TDP) 32 Watt 250 Watt
    Interface PCIe 3.0 x16 PCIe 2.0 x16
    Supplementary power connectors 1x 6-pin + 1x 8-pin
    Memory type DDR3\GDDR5 GDDR3
    Maximum RAM amount 2 GB 512 MB
    Display Connectors No outputs 4x DVI, 1x S-Video
      Check Price
    • Radeon HD 4850 X2 has 681% more power consumption, than GeForce GT 645M.
    • GeForce GT 645M is connected by PCIe 3.0 x16, and Radeon HD 4850 X2 uses PCIe 2.0 x16 interface.
    • Radeon HD 4850 X2 has 510 GB more memory, than GeForce GT 645M.
    • GeForce GT 645M is used in Laptops, and Radeon HD 4850 X2 - in Desktops.
    • GeForce GT 645M is build with Kepler architecture, and Radeon HD 4850 X2 - with TeraScale.
    • GeForce GT 645M is manufactured by 28 nm process technology, and Radeon HD 4850 X2 - by 55 nm process technology.
    • Memory clock speed of Radeon HD 4850 X2 is 190 MHz higher, than GeForce GT 645M.

    Game benchmarks

    high / 1080p 1−2 3−4
    ultra / 1080p 0−1 2−3
    QHD / 1440p 0−1 0−1
    low / 720p 12−14 14−16
    medium / 1080p 2−3 5−6
    The average gaming FPS of Radeon HD 4850 X2 in Assassin's Creed Odyssey is 60% more, than GeForce GT 645M.

    Full Specs

      GeForce GT 645M Radeon HD 4850 X2
    Architecture Kepler TeraScale
    Code name N13P-GS R700
    Type Laptop Desktop
    Release date 22 March 2012 7 November 2008
    Pipelines 384 800
    Core clock speed 625 MHz
    Transistor count 1,270 million 956 million
    Manufacturing process technology 28 nm 55 nm
    Texture fill rate 22.7 billion/sec 25.00
    Floating-point performance 544.5 gflops 2x 1,000.0 gflops
    Length 267 mm
    Memory bus width 128bit 256 Bit
    Memory clock speed 1800 MHz 1990 MHz
    Memory bandwidth 63.68 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) 19 Mh/s
    Laptop size medium sized
    Optimus +
      Check Price

    Similar compares