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    Radeon HD 6990M vs Radeon Sky 500

    When comparing Radeon HD 6990M and Radeon Sky 500, 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 6990M and Radeon Sky 500 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    Radeon HD 6990M Check Price
    Radeon Sky 500

    Radeon HD 6990M is a Laptop Graphics Card

    Note: Radeon HD 6990M 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 6990M here:

    Radeon HD 6990M Laptops

    Main Specs

      Radeon HD 6990M Radeon Sky 500
    Power consumption (TDP) 100 Watt 150 Watt
    Interface MXM-B (3.0) PCIe 3.0 x16
    Supplementary power connectors None 1x 6-pin
    Memory type GDDR5 GDDR5
    Maximum RAM amount 2 GB 4 GB
    Display Connectors No outputs 1x DisplayPort
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    • Radeon Sky 500 has 50% more power consumption, than Radeon HD 6990M.
    • Radeon HD 6990M is connected by MXM-B (3.0), and Radeon Sky 500 uses PCIe 3.0 x16 interface.
    • Radeon Sky 500 has 2 GB more memory, than Radeon HD 6990M.
    • Radeon HD 6990M is used in Laptops, and Radeon Sky 500 - in Desktops.
    • Radeon HD 6990M is build with Terascale 2 architecture, and Radeon Sky 500 - with GCN 1.0.
    • Core clock speed of Radeon Sky 500 is 235 MHz higher, than Radeon HD 6990M.
    • Radeon HD 6990M is manufactured by 40 nm process technology, and Radeon Sky 500 - by 28 nm process technology.
    • Memory clock speed of Radeon Sky 500 is 3900 MHz higher, than Radeon HD 6990M.

    Game benchmarks

    high / 1080p 14−16 35−40
    ultra / 1080p 8−9 21−24
    QHD / 1440p 3−4 16−18
    4K / 2160p − 10−11
    low / 720p 30−33 60−65
    medium / 1080p 16−18 40−45
    The average gaming FPS of Radeon Sky 500 in Assassin's Creed Odyssey is 140% more, than Radeon HD 6990M.

    Full Specs

      Radeon HD 6990M Radeon Sky 500
    Architecture Terascale 2 GCN 1.0
    Code name Blackcomb XTX Pitcairn
    Type Laptop Desktop
    Release date 12 July 2011 27 March 2013
    Pipelines 1120 1280
    Core clock speed 715 MHz 950 MHz
    Transistor count 1,700 million 2,800 million
    Manufacturing process technology 40 nm 28 nm
    Texture fill rate 40.04 76.00
    Floating-point performance 1,601.6 gflops 2,432 gflops
    Length 242 mm
    Memory bus width 256 Bit 256 Bit
    Memory clock speed 900 MHz 4800 MHz
    Memory bandwidth 115.2 GB/s 154 GB/s
    Shared memory -
    DirectX 11.2 (11_0) 12 (11_1)
    Shader Model 5.0 5.1
    OpenGL 4.4 4.6
    OpenCL 1.2 1.2
    Vulkan N/A 1.2.131
    Bus support PCIe 3.0
    Laptop size large
    Form factor full height / full length
    DisplayPort count 1
    Dual-link DVI support +
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