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    GeForce GT 640 vs Mobility Radeon HD 4870 X2

    When comparing GeForce GT 640 and Mobility Radeon HD 4870 X2, 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 640 and Mobility Radeon HD 4870 X2 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    GeForce GT 640 Check Price
    Mobility Radeon HD 4870 X2 Check Price

    Mobility Radeon HD 4870 X2 is a Laptop Graphics Card

    Note: Mobility Radeon HD 4870 X2 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 Mobility Radeon HD 4870 X2 here:

    Mobility Radeon HD 4870 X2 Laptops

    Main Specs

      GeForce GT 640 Mobility Radeon HD 4870 X2
    Power consumption (TDP) 65 Watt
    Interface PCIe 3.0 x16 PCIe 2.0 x16
    Supplementary power connectors None
    Memory type DDR3 GDDR3, GDDR5
    Maximum RAM amount 2 GB 2 GB
    Display Connectors 1x DVI, 1x HDMI, 1x DisplayPort No outputs
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    • GeForce GT 640 is connected by PCIe 3.0 x16, and Mobility Radeon HD 4870 X2 uses PCIe 2.0 x16 interface.
    • GeForce GT 640 and Mobility Radeon HD 4870 X2 have maximum RAM of 2 GB.
    • GeForce GT 640 is used in Desktops, and Mobility Radeon HD 4870 X2 - in Laptops.
    • GeForce GT 640 is build with Kepler architecture, and Mobility Radeon HD 4870 X2 - with Terascale 1.
    • Core clock speed of GeForce GT 640 is 352 MHz higher, than Mobility Radeon HD 4870 X2.
    • GeForce GT 640 is manufactured by 28 nm process technology, and Mobility Radeon HD 4870 X2 - by 55 nm process technology.
    • Memory clock speed of GeForce GT 640 is 894 MHz higher, than Mobility Radeon HD 4870 X2.

    Game benchmarks

    high / 1080p 2−3 9−10
    ultra / 1080p 1−2 5−6
    QHD / 1440p 0−1 0−1
    low / 720p 14−16 21−24
    medium / 1080p 5−6 12−14
    The average gaming FPS of Mobility Radeon HD 4870 X2 in Assassin's Creed Odyssey is 100% more, than GeForce GT 640.

    Full Specs

      GeForce GT 640 Mobility Radeon HD 4870 X2
    Architecture Kepler Terascale 1
    Code name GK107 M98-XT
    Type Desktop Laptop
    Release date 5 June 2012 9 January 2009
    Pipelines 384 1600
    Core clock speed 902 MHz 550 MHz
    Transistor count 1,270 million 956 million
    Manufacturing process technology 28 nm 55 nm
    Texture fill rate 28.86 22.00
    Floating-point performance 692.7 gflops 2x 880.0 gflops
    Length 145 mm
    Memory bus width 128 Bit 256 Bit
    Memory clock speed 1782 MHz 888 MHz
    Memory bandwidth 28.51 GB/s 89.6 GB/s
    Shared memory -
    DirectX 12 (11_0) 10.1 (10_1)
    Shader Model 5.1 4.1
    OpenGL 4.6 3.3
    OpenCL 1.2 1.1
    Vulkan 1.1.126 N/A
    CUDA 3.0
    Bitcoin / BTC (SHA256) 24 Mh/s
    Laptop size large
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