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    Radeon HD 7750M vs Radeon RX 640

    If you are going to buy a new graphics card and are choosing between Radeon HD 7750M and Radeon RX 640, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the Radeon HD 7750M stacks up against Radeon RX 640, check out specs charts below.
    Radeon HD 7750M Check Price
    Radeon RX 640 Check Price

    Radeon HD 7750M and Radeon RX 640 are Laptop Graphics Cards

    Note: Radeon HD 7750M and Radeon RX 640 are only used in laptop graphics. They have 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 HD 7750M or Radeon RX 640 here:

    Radeon HD 7750M Laptops
    Radeon RX 640 Laptops

    Main Specs

      Radeon HD 7750M Radeon RX 640
    Power consumption (TDP) 28 Watt 50 Watt
    Interface PCIe 2.0 x16 PCIe 3.0 x8
    Supplementary power connectors None
    Memory type GDDR5 GDDR5
    Maximum RAM amount 2 GB 4 GB
    Display Connectors No outputs 1x DVI, 1x HDMI, 1x DisplayPort
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    • Radeon RX 640 has 78% more power consumption, than Radeon HD 7750M.
    • Radeon HD 7750M is connected by PCIe 2.0 x16, and Radeon RX 640 uses PCIe 3.0 x8 interface.
    • Radeon RX 640 has 2 GB more memory, than Radeon HD 7750M.
    • Both cards are used in Laptops.
    • Radeon HD 7750M is build with GCN architecture, and Radeon RX 640 - with Polaris.
    • Core clock speed of Radeon RX 640 is 643 MHz higher, than Radeon HD 7750M.
    • Radeon HD 7750M is manufactured by 28 nm process technology, and Radeon RX 640 - by 14 nm process technology.
    • Memory clock speed of Radeon RX 640 is 2000 MHz higher, than Radeon HD 7750M.

    Game benchmarks

    high / 1080p 3−4 5−6
    ultra / 1080p 1−2 3−4
    QHD / 1440p 0−1 2−3
    low / 720p 14−16 16−18
    medium / 1080p 5−6 7−8
    The average gaming FPS of Radeon RX 640 in Assassin's Creed Odyssey is 33% more, than Radeon HD 7750M.

    Full Specs

      Radeon HD 7750M Radeon RX 640
    Architecture GCN Polaris
    Code name Lombok XL Polaris 12
    Type Laptop Laptop
    Release date 24 April 2012 12 August 2019
    Pipelines 512 640
    Core clock speed 575 MHz 1218 MHz
    Boost Clock 1218 MHz
    Transistor count 1,500 million 2,200 million
    Manufacturing process technology 28 nm 14 nm
    Texture fill rate 18.40 38.98
    Floating-point performance 588.8 gflops
    Memory bus width 128 Bit 64 Bit
    Memory clock speed 4000 MHz 6000 MHz
    Memory bandwidth 64 GB/s 112.0 GB/s
    Shared memory - -
    DirectX 12 (11_1) 12 (12_0)
    Shader Model 5.1 6.4
    OpenGL 4.6 4.6
    OpenCL 1.2 2.0
    Vulkan 1.2.131 1.2.131
    FreeSync +
    Laptop size medium sized large
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