The general description of the computers used are as follows. I have a very powerful PC with a video card that has a lot of memory to drive the visuals. I use a Matrox Triple Head 2 Go to split the image into three channels and then send the image to the projectors.
The main PC runs P3D and all scenery software. I also run my Sim-Avionics Server program on this machine.
I have an Instructor station that runs administrative software for flight planning. I’m waiting on FDS to get back to me so I can actually run an Instructor version of Sim-avionics here as well. I run one sound module off of this machine for flight deck callouts.
I have four other PC’s that run independent software to each section of the flightdeck.
PC 1 – CPT PFD/ND, CPT Clock, IRS LCD in AFT Overhead & EICAS Display
PC2 – CPT CDU
PC3 -FO PFD/ND, FO Clock & MFD
PC4 – FO CDU
Of course I have a couple iPads that run Foreflight, Sim-Avionics and Navigraph software.
Networked computers allow everything to communicate correctly. I have two 24 ports switches for the house but a lot of the ports are used by the flightdeck.