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    GeForce GT 640M vs Radeon R7 250

    When comparing GeForce GT 640M and Radeon R7 250, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between GeForce GT 640M and Radeon R7 250 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    GeForce GT 640M Check Price
    Radeon R7 250 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 R7 250
    Power consumption (TDP) 32 Watt 75 Watt
    Interface PCIe 3.0 x16 PCIe 3.0 x8
    Supplementary power connectors N/A
    Memory type DDR3\GDDR5 DDR3, GDDR5
    Maximum RAM amount 2 GB 2 GB
    Display Connectors No outputs 1x DVI, 1x HDMI, 1x VGA
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    • Radeon R7 250 has 134% more power consumption, than GeForce GT 640M.
    • GeForce GT 640M is connected by PCIe 3.0 x16, and Radeon R7 250 uses PCIe 3.0 x8 interface.
    • GeForce GT 640M and Radeon R7 250 have maximum RAM of 2 GB.
    • GeForce GT 640M is used in Laptops, and Radeon R7 250 - in Desktops.
    • GeForce GT 640M is build with Kepler architecture, and Radeon R7 250 - with GCN.
    • GeForce GT 640M and Radeon R7 250 are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce GT 640M is 650 MHz higher, than Radeon R7 250.

    Game benchmarks

    high / 1080p 0−1 3−4
    ultra / 1080p 0−1 1−2
    QHD / 1440p 0−1 0−1
    low / 720p 10−12 14−16
    medium / 1080p 2−3 5−6
    The average gaming FPS of Radeon R7 250 in Assassin's Creed Odyssey is 66% more, than GeForce GT 640M.

    Full Specs

      GeForce GT 640M Radeon R7 250
    Architecture Kepler GCN
    Code name N13P-GS Oland XT
    Type Laptop Desktop
    Release date 22 March 2012 1 October 2013
    Pipelines 384 384
    Boost Clock 645 MHz 1050 MHz
    Transistor count 1,270 million 950 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 25.20
    Floating-point performance 480.0 gflops 716.8 gflops
    Length 168 mm
    Memory bus width 128bit 128 Bit
    Memory clock speed 1800 - 4000 MHz 1150 MHz
    Memory bandwidth 72 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 3.0
    HDMI + +
    HDCP +
    Maximum VGA resolution Up to 2048x1536
    3D Blu-Ray +
    Bitcoin / BTC (SHA256) 18 Mh/s 117 Mh/s
    Laptop size medium sized
    Optimus +
    Design reference
    CrossFire +
    DDMA audio +
    Ethereum / ETH (DaggerHashimoto) 3 Mh/s
    AppAcceleration +
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