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    Radeon R7 512 Cores Kaveri vs Radeon RX 640

    When comparing Radeon R7 512 Cores Kaveri and Radeon RX 640, 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 Radeon R7 512 Cores Kaveri and Radeon RX 640 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    Radeon R7 512 Cores Kaveri
    Radeon RX 640 Check Price

    Radeon RX 640 is a Laptop Graphics Card

    Note: Radeon RX 640 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 Radeon RX 640 here:

    Radeon RX 640 Laptops

    Main Specs

      Radeon R7 512 Cores Kaveri Radeon RX 640
    Power consumption (TDP) 50 Watt
    Interface PCIe 3.0 x8
    Supplementary power connectors None
    Memory type GDDR5
    Maximum RAM amount 4 GB
    Display Connectors 1x DVI, 1x HDMI, 1x DisplayPort
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    • Radeon R7 512 Cores Kaveri is used in Desktops, and Radeon RX 640 - in Laptops.
    • Radeon R7 512 Cores Kaveri is build with GCN architecture, and Radeon RX 640 - with Polaris.
    • Core clock speed of Radeon RX 640 is 498 MHz higher, than Radeon R7 512 Cores Kaveri.
    • Radeon R7 512 Cores Kaveri is manufactured by 28 nm process technology, and Radeon RX 640 - by 14 nm process technology.

    Game benchmarks

    high / 1080p 7−8 5−6
    ultra / 1080p 4−5 3−4
    QHD / 1440p 0−1 2−3
    low / 720p 18−20 16−18
    medium / 1080p 9−10 7−8
    The average gaming FPS of Radeon R7 512 Cores Kaveri in Assassin's Creed Odyssey is 25% more, than Radeon RX 640.

    Full Specs

      Radeon R7 512 Cores Kaveri Radeon RX 640
    Architecture GCN Polaris
    Code name Kaveri Spectre Polaris 12
    Type Desktop Laptop
    Release date 14 January 2014 12 August 2019
    Pipelines 512 640
    Core clock speed 720 MHz 1218 MHz
    Boost Clock 1218 MHz
    Transistor count 2,200 million
    Manufacturing process technology 28 nm 14 nm
    Texture fill rate 38.98
    Memory bus width 64 Bit
    Memory clock speed 6000 MHz
    Memory bandwidth 112.0 GB/s
    Shared memory + -
    DirectX DirectX 12 (FL 12_0), Shader 5.2 12 (12_0)
    Shader Model 6.4
    OpenGL 4.6
    OpenCL 2.0
    Vulkan 1.2.131
    FreeSync +
    Laptop size large
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