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Re: iMac + eGPU + Cinema 4D

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Sam Treadway
Re: iMac + eGPU + Cinema 4D
on Dec 2, 2019 at 2:14:47 am

Versions of Octane and Redshift are currently in development to support Apple Metal API.

Both have announced (through official and unofficial channels) that a release is eminent (perhaps by the end of the year or early in 2020) but this may be the start of beta. Since MAXON now owns Redshift and since many C4D artists are also on Mac, they are fully aware of the want and need. From what I've read recently, it appears that Apple is working very closely with both developers to implement the Metal counterparts as this will give Apple a better understanding of use in the wild (Metal) and will eventually pull in more sales from the high-end market. I don't see Apple directly supporting modern Nvidia products nor garnering support from Nvidia in the foreseeable future.

If you want to use an Nvidia eGPU you will have to work within macOS 10.13 and visit to learn about the hacks required and limitations for your specific hardware. Nvidia has also publicly announced that it will not continue developing CUDA for Mac. The Nvidia route (now) is like a nicely paved road that leads to a cliff where the alternative is to sit and wait for the even nicer road leading to an unknown paradise to be paved...however long it takes...

The question is: Do you want to put your money on something that can help right now but has no possible future path, or bide time and hope that these developments pan out. Redshift will be introducing a metal version for Mac users. Otoy, from what I remember, uses their own standardized code which goes through a middle translation layer where kernels are constructed based on the active API.

Other reasons to go with AMD now: If you use other tools such as DaVinci Resolve, Affinity photo or designer (adobe alternatives), then you can take avantage of the egpus with those and other tools right now.

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