I decided it was time to build a new computer. The old Dell Optiplex 755 had been upgraded as much as I could and I was still getting stuttering on Plex movies.
I play occasional games, but mostly this system is to support 900+ movies and 4 Roku TVs, along with smartphones. It can handle the latest Plex Media Manager, and do encoding on movies. I plan to add 2 additional Corsair fans, and replace the slightly older graphics card with something newer. Still undecided and I am open to any suggestions? Budget is around $200 for the GPU.
The 3 WD 1TB drives are configured in a Raid 5, with the OS on the SSD. The other 2 drives are re-purposed from previous computers. This is the first Raid I've set up and it wasn't very difficult to do.