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    Radeon HD 7660G plus HD 7670M Dual Graphics vs Radeon HD 7990

    When comparing Radeon HD 7660G plus HD 7670M Dual Graphics and Radeon HD 7990, 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 7660G plus HD 7670M Dual Graphics and Radeon HD 7990 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    Radeon HD 7660G plus HD 7670M Dual Graphics Check Price
    Radeon HD 7990 Check Price

    Radeon HD 7660G plus HD 7670M Dual Graphics is a Laptop Graphics Card

    Note: Radeon HD 7660G plus HD 7670M Dual Graphics 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 HD 7660G plus HD 7670M Dual Graphics here:

    Radeon HD 7660G plus HD 7670M Dual Graphics Laptops

    Main Specs

      Radeon HD 7660G plus HD 7670M Dual Graphics Radeon HD 7990
    Power consumption (TDP) 375 Watt
    Interface PCIe 3.0 x16
    Supplementary power connectors 2x 8-pin
    Memory type DDR3,GDDR5 GDDR5
    Maximum RAM amount 3 GB
    Display Connectors 1x DVI, 4x mini-DisplayPort
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    • Radeon HD 7660G plus HD 7670M Dual Graphics is used in Laptops, and Radeon HD 7990 - in Desktops.
    • Radeon HD 7660G plus HD 7670M Dual Graphics is build with Terascale 2 architecture, and Radeon HD 7990 - with GCN 1.0.
    • Core clock speed of Radeon HD 7990 is 265 MHz higher, than Radeon HD 7660G plus HD 7670M Dual Graphics.
    • Radeon HD 7660G plus HD 7670M Dual Graphics is manufactured by 40 / 32 nm process technology, and Radeon HD 7990 - by 28 nm process technology.
    • Memory clock speed of Radeon HD 7990 is 4200 MHz higher, than Radeon HD 7660G plus HD 7670M Dual Graphics.

    Game benchmarks

    high / 1080p 1−2 35−40
    ultra / 1080p 0−1 21−24
    QHD / 1440p 0−1 16−18
    4K / 2160p − 10−11
    low / 720p 12−14 60−65
    medium / 1080p 3−4 40−45
    The average gaming FPS of Radeon HD 7990 in Assassin's Creed Odyssey is 683% more, than Radeon HD 7660G plus HD 7670M Dual Graphics.

    Full Specs

      Radeon HD 7660G plus HD 7670M Dual Graphics Radeon HD 7990
    Architecture Terascale 2 GCN 1.0
    Code name Malta
    Type Laptop Desktop
    Release date 15 May 2012 24 April 2013
    Pipelines 862 2048
    Core clock speed 685 / 600 MHz 950 MHz
    Boost Clock 1000 MHz
    Transistor count 4,313 million
    Manufacturing process technology 40 / 32 nm 28 nm
    Texture fill rate 128.0
    Floating-point performance 2x 4,096 gflops
    Length 307 mm
    Memory bus width 128 Bit 384 Bit
    Memory clock speed 1800 MHz 6000 MHz
    Memory bandwidth 288.0 GB/s
    Shared memory -
    DirectX DirectX 11, Shader 5.0 12 (11_1)
    Shader Model 5.1
    OpenGL 4.6
    OpenCL 1.2
    Vulkan 1.2.131
    Bitcoin / BTC (SHA256) 459 Mh/s
    Laptop size medium sized
    Ethereum / ETH (DaggerHashimoto) 44 Mh/s
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