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    Radeon HD 6990M vs Radeon R9 M385

    When comparing Radeon HD 6990M and Radeon R9 M385, 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 R9 M385 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 R9 M385 Check Price

    Radeon HD 6990M and Radeon R9 M385 are Laptop Graphics Cards

    Note: Radeon HD 6990M and Radeon R9 M385 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 6990M or Radeon R9 M385 here:

    Radeon HD 6990M Laptops
    Radeon R9 M385 Laptops

    Main Specs

      Radeon HD 6990M Radeon R9 M385
    Power consumption (TDP) 100 Watt
    Interface MXM-B (3.0) PCIe 3.0 x16
    Supplementary power connectors None
    Memory type GDDR5 GDDR5
    Maximum RAM amount 2 GB 4 GB
    Display Connectors No outputs No outputs
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    • Radeon HD 6990M is connected by MXM-B (3.0), and Radeon R9 M385 uses PCIe 3.0 x16 interface.
    • Radeon R9 M385 has 2 GB more memory, than Radeon HD 6990M.
    • Both cards are used in Laptops.
    • Radeon HD 6990M is build with Terascale 2 architecture, and Radeon R9 M385 - with GCN.
    • Radeon HD 6990M is manufactured by 40 nm process technology, and Radeon R9 M385 - by 28 nm process technology.
    • Memory clock speed of Radeon R9 M385 is 600 MHz higher, than Radeon HD 6990M.

    Game benchmarks

    high / 1080p 14−16 10−12
    ultra / 1080p 8−9 6−7
    QHD / 1440p 3−4 1−2
    low / 720p 30−33 24−27
    medium / 1080p 16−18 12−14
    The average gaming FPS of Radeon HD 6990M in Assassin's Creed Odyssey is 36% more, than Radeon R9 M385.

    Full Specs

      Radeon HD 6990M Radeon R9 M385
    Architecture Terascale 2 GCN
    Code name Blackcomb XTX Strato
    Type Laptop Laptop
    Release date 12 July 2011 16 June 2015
    Pipelines 1120 896
    Core clock speed 715 MHz
    Boost Clock 1100 MHz
    Transistor count 1,700 million 2,080 million
    Manufacturing process technology 40 nm 28 nm
    Texture fill rate 40.04 56.00
    Floating-point performance 1,601.6 gflops 1,792 gflops
    Memory bus width 256 Bit 128 Bit
    Memory clock speed 900 MHz 1500 MHz
    Memory bandwidth 115.2 GB/s 76.8 GB/s
    Shared memory - -
    DirectX 11.2 (11_0)
    Shader Model 5.0 6.3
    OpenGL 4.4 4.4
    OpenCL 1.2 Not Listed
    Vulkan N/A
    FreeSync +
    Bus support PCIe 3.0
    Laptop size large medium sized
    Eyefinity +
    HD3D +
    PowerTune +
    DualGraphics +
    TrueAudio +
    ZeroCore +
    Switchable graphics +
    Mantle +
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