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    Radeon HD 4770 vs Radeon RX 640

    When comparing Radeon HD 4770 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 HD 4770 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 HD 4770
    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 HD 4770 Radeon RX 640
    Power consumption (TDP) 80 Watt 50 Watt
    Interface PCIe 2.0 x16 PCIe 3.0 x8
    Supplementary power connectors 1x 6-pin None
    Memory type GDDR5 GDDR5
    Maximum RAM amount 512 MB 4 GB
    Display Connectors 2x DVI, 1x S-Video 1x DVI, 1x HDMI, 1x DisplayPort
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    • Radeon HD 4770 has 60% more power consumption, than Radeon RX 640.
    • Radeon HD 4770 is connected by PCIe 2.0 x16, and Radeon RX 640 uses PCIe 3.0 x8 interface.
    • Radeon HD 4770 has 508 GB more memory, than Radeon RX 640.
    • Radeon HD 4770 is used in Desktops, and Radeon RX 640 - in Laptops.
    • Radeon HD 4770 is build with TeraScale architecture, and Radeon RX 640 - with Polaris.
    • Core clock speed of Radeon RX 640 is 468 MHz higher, than Radeon HD 4770.
    • Radeon HD 4770 is manufactured by 40 nm process technology, and Radeon RX 640 - by 14 nm process technology.
    • Memory clock speed of Radeon RX 640 is 2800 MHz higher, than Radeon HD 4770.

    Game benchmarks

    high / 1080p 1−2 5−6
    ultra / 1080p 0−1 3−4
    QHD / 1440p 0−1 2−3
    low / 720p 10−12 16−18
    medium / 1080p 2−3 7−8
    The average gaming FPS of Radeon RX 640 in Assassin's Creed Odyssey is 100% more, than Radeon HD 4770.

    Full Specs

      Radeon HD 4770 Radeon RX 640
    Architecture TeraScale Polaris
    Code name RV740 Polaris 12
    Type Desktop Laptop
    Release date 28 April 2009 12 August 2019
    Pipelines 640 640
    Core clock speed 750 MHz 1218 MHz
    Boost Clock 1218 MHz
    Transistor count 826 million 2,200 million
    Manufacturing process technology 40 nm 14 nm
    Texture fill rate 24.00 38.98
    Floating-point performance 960.0 gflops
    Length 203 mm
    Memory bus width 128 Bit 64 Bit
    Memory clock speed 3200 MHz 6000 MHz
    Memory bandwidth 51.2 GB/s 112.0 GB/s
    Shared memory -
    DirectX 10.1 (10_1) 12 (12_0)
    Shader Model 4.1 6.4
    OpenGL 3.3 4.6
    OpenCL 1.1 2.0
    Vulkan N/A 1.2.131
    FreeSync +
    Laptop size large
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