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Later this year I intend to purchase a custom built workstation.
This will have something like the following and may change.
Ryzen 3900 processor
32GB of fast memory
Graphics Card (tbd, based on recommendations at that point in time and how much Adobe are using the graphics card for Lr and Ps)
High End Motherboard (to ensure max bandwith for internal drives and graphics cards and most efficient handling of heat generated by fast cpu's and graphics cards. Details to be worked out as I do not want fans running all the time).
Drive 1 M2 Nvme SSD 1TB for operating system and apps only
Drive 2 M2 Nvme SSD 512GB for Lr Catalog and Lr/PS cache
Drive 3. Sata 6 internal drive 7200 rpm 8-10TB for data/image storage
Drive 4 Sata 6 internal 7200 rpm 8-10TB for fast internal data backup.
At least 1 Thunderbolt 3 40gb/s port.
I may replace drive 3 and 4 with a Thunderbolt 3 disk enclosure, which will allow me easily share my main image repository with my recent travel images on my laptop. My new laptop may allow me to push back building a new workstation, as I have not had the opportunity to travel with it yet and experience how it performs in a real world scenario.
I also backup my data to an external nas drive (slow but fine for backups).
These may appear as extreme specs, but my experience has been that a well specified machine lasts a lot longer and is cheaper than replacing in a few years time. My last custom built workstation is still going strong after 10 years, but it was not built to handle 60GB image files.
There are lots of combinations possible between the Laptop and Workstation described above.
At the time I was buying the laptop there stores were running out of supplies, but was lucky to get a good deal. Not sure if the current corvid scenario may present some good deals as the initial surge for new remote working hardware has passed.
I am happy to try and answer any questions arising.