Our current workstation that I built has a 6 cores, 12 threads i7, 3.3 Ghz, 128 Gig of RAM and two SSD and a pair of spinning 2TB drives in a RAID.
I am going to add a M.2 drive and make that the boot drive and then another pair of SSDs running as a strip RAID.
It has 6 chassis fans and a huge fan for the CPU. It has two GeForce GTX 980 video cards and each card has 4 GB of RAM. Running Win 10 Pro.
GeForce GTX 980 | Specifications | GeForce
The job is 200 square miles at 6 inch resolution.
I have seen it using as much as 110 Gig of RAM but we have not pegged it out as yet.