Apple offers its current 
Mac Pro for professional video editing also with the 2,500 Euro expensive Afterburner PCIe x16 accelerator card, which accelerates the work (more precisely the encoding, decoding and transcoding) with ProRes (RAW) - it supports the playback of up to six 8K ProRes RAW streams or 23 4K ProRes RAW streams simultaneously.
Apple Afterburner ProRes PCIe x16 accelerator card
Until now, support has been limited to Apple's editing program FCPX, QuickTime Player X and a few other third party apps - now support for Adobe's Premiere Pro editing program has also been announced. It was to be guessed that this has been in the works for a long time, since the presentation of the Mac Pro on the WWC in connection with Afterburner also showed Adobe and Blackmagic logos.
Adobe has now announced in a posting in the Premiere Pro Forum that newer betas (from 14.3.0) of Premiere Pro/After Effects and Media Encoder already include support for Apple's Afterburner accelerator card and can be tried out by users who used it. Currently, decoding using Afterburner is supported for ProRes 4444 and 422 videos - ProRes RAW is not yet supported. To do so, you need to enable rendering via Metal in the respective Adobe programs (which is the default).
Apple Mac Pro 2019
Unfortunately, there is no way to see if Afterburner is actually used in the respective Adobe App when working with ProRes 4444/422 at the moment - but the acceleration should be noticeable if Afterburner works.
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