Does the Blackmagic eGPU have the same performance advantages on an iMac?

Blackmagic eGPU

Blackmagic eGPU

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2 Answers from the Community

  • It depends on your model of iMac. If your iMac already has an 8GB Radeon Pro 580, there will likely be no benefit, since it's the exact same as this eGPU.

  • It's like adding a 2nd graphic card to your iMac providing you using a compatible iMac/

    Taken from blackmagic design website.
    Does the Blackmagic eGPU work with all macOS computers?

    The Blackmagic eGPU will work with all Thunderbolt 3 based Apple computers that are running macOS 10.13.6 or later. This includes MacBook Pro computers from the 2016 model year and later, 2017 iMac and iMac Pro.

    What is the GPU used in the Blackmagic eGPU?

    The Blackmagic eGPU is built around a Radeon Pro 580 GPU which is the GPU found in the high end 2017 model of 27 inch iMac.

    Here are the GPU spec.

    Graphics Processing

    Radeon Pro 580
    Video Memory

    8 GB
    Compute Units

    Stream Processors

    Texture Mapping Units

    Raster Operation Pipelines

    Base Clock

    1200 MHz
    Memory Clock

    1693 MHz
    Memory Bus Width

    Memory Bandwidth

    217 GB/s