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    Iris Plus Graphics 645 vs Radeon R9 M385

    If you are going to buy a new graphics card and are choosing between Iris Plus Graphics 645 and Radeon R9 M385, 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 Iris Plus Graphics 645 stacks up against Radeon R9 M385, check out specs charts below.
    Iris Plus Graphics 645 Check Price
    Radeon R9 M385 Check Price

    Iris Plus Graphics 645 and Radeon R9 M385 are Laptop Graphics Cards

    Note: Iris Plus Graphics 645 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 Iris Plus Graphics 645 or Radeon R9 M385 here:

    Iris Plus Graphics 645 Laptops
    Radeon R9 M385 Laptops

    Main Specs

      Iris Plus Graphics 645 Radeon R9 M385
    Power consumption (TDP) 15 Watt
    Interface PCIe 3.0 x1 PCIe 3.0 x16
    Memory type DDR3/DDR4 GDDR5
    Maximum RAM amount 4 GB
    Display Connectors No outputs No outputs
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    • Iris Plus Graphics 645 is connected by PCIe 3.0 x1, and Radeon R9 M385 uses PCIe 3.0 x16 interface.
    • Both cards are used in Laptops.
    • Iris Plus Graphics 645 is build with Gen. 9.5 Coffee Lake architecture, and Radeon R9 M385 - with GCN.
    • Iris Plus Graphics 645 is manufactured by 14 nm process technology, and Radeon R9 M385 - by 28 nm process technology.

    Game benchmarks

    high / 1080p 4−5 10−12
    ultra / 1080p 2−3 6−7
    QHD / 1440p 0−1 1−2
    low / 720p 12−14 24−27
    medium / 1080p 5−6 12−14
    The average gaming FPS of Radeon R9 M385 in Assassin's Creed Odyssey is 133% more, than Iris Plus Graphics 645.

    Full Specs

      Iris Plus Graphics 645 Radeon R9 M385
    Architecture Gen. 9.5 Coffee Lake GCN
    Code name Kaby Lake GT3e Strato
    Type Laptop Laptop
    Release date 10 July 2019 16 June 2015
    Pipelines 48 896
    Core clock speed 300 MHz
    Boost Clock 1150 MHz 1100 MHz
    Transistor count 2,080 million
    Manufacturing process technology 14 nm 28 nm
    Texture fill rate 50.40 56.00
    Floating-point performance 1,792 gflops
    Memory bus width 128 Bit
    Memory clock speed 1500 MHz
    Memory bandwidth 76.8 GB/s
    Shared memory + -
    DirectX 12 (12_1)
    Shader Model 6.4 6.3
    OpenGL 4.6 4.4
    OpenCL 2.1 Not Listed
    Vulkan 1.1.103
    FreeSync +
    Bus support PCIe 3.0
    Laptop size medium sized
    Eyefinity +
    HD3D +
    PowerTune +
    DualGraphics +
    TrueAudio +
    ZeroCore +
    Switchable graphics +
    Mantle +
    Quick Sync +
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