We are using Intel core I5/I7 machines with 8G-24G ram. There are no custom setups, basically higher end PCs, with mid level and higher end GPU for rendering. Lots of drives, internal and external ranging from 500G to 3-4 Terabyte ranges.
Some members have dual custom monitors, while others have ultrawide 21:9 monitors.
Screenshots of monitor and layout: 
Note the Metal Xwing and Tie fighter

Screenshots of the trilogy.
Normal size for 1080p (1920x1080)

Full widescreen (some tiny edges at times depending on cropping)




You can read about other people’s setups here:
http://originaltrilogy.com/topic/What-is-your-home-theater-setup-for-watching-Star-Wars-movies-or-what-equipment-would-like-to-get-if-you-could-afford-it-or-dream-setup/id/14630
Or feel free to add your own setup to that post
The number of people on the team varies from time to time, started off with 1, expanded to 2,
and then finally got to 4-5, with some leaving, and others joining.
We have several ‘helpers’, that are just like team members, that help with distribution, quality checks, etc.
Poita, Harmy, and others are contributing and collaborating directly and indirectly. There are many others here at OT that also help out.
Team Negative1