I'm building a full dual seat 737 simulator based on Prosim737v1.56, Prepar3Dv4, Sioc v5.0 and predominantly Open Cockpits modules including a FWD Overhead.Main visual display uses three 55" UHD curved screen TV's.
I am currently running a single PC 6 core I7 extreme cpu which is now 10 years old but still coping well.
I run Prosim737v1.56 with Prepar3Dv4 and SIOC to drive the Opencockpits hardware.