Which iMac Pro should Adobe Lightroom user get?

The user, a professional art photographer,  wants to get an iMac Pro.  

They have a large Lightroom catalog of photos that they work on - over 150,000 photos.  They do all their adjustments in Lightroom
, and don't use Photoshop (although they may want to in the future)  Lightroom needs to display several hundred previews that can be scrolled at a time, and they would like the previews to scroll quickly.

So - although they are looking for fast display of multiple images, they are not doing any video editing, 3D rendering, or VR.

They already have a 2.5 year old iMac with i7, 16 GB of RAM, and the video circuitry with (I don't recall) maybe 2 GB of VRAM


I was going to recommend an iMac Pro bumped to 64GB RAM, and the Radeon Pro Vega with 64 of VRAM.

I am not sure if increasing the configuration to 10-core Zeon will make a significant difference with Lightroom or Photoshop in the future.

Any advice on the most satisfying configuration for the iMac Pro?

Thanks.
computerlarryAsked:
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Jackie ManCommented:
The bottleneck is not from the memory or CPU.

Just get a big MLC SSD and clone the HDD to the SSD and you will notice the difference in performance.

https://www.lightroomforums.net/threads/can-lr-6-benefit-from-32-gb-of-memory.25441/
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