Thanks wer, I was more concerned with the GPU than the other PC's specs. Regarding storage, that's covered. My son and I have been ripping files since the early '90's. So, storage needs are well in hand. Or thinking about it further, they may be more out of hand, with more than several dozen hard drives (2.5", 3.5", internal, external, various sizes etc.) and drive docks scattered about.
The Optoma UHZ-65 was carefully researched and chosen for the room and our needs. As was the Seymour Ambient-Visionaire 0.9 screen that will accompany it. If the planned HT room was a movie night, cave-like room, another brand of projector and screen would have been chosen. However, we intend to use the room and projector for streaming services more than descrete movie-time-movies. Because the Optoma will be utilized more like a TV than a projector, I wanted zero worries regarding light source degradation and life. Additionally, while room lighting can be controlled, unless it's nighttime, it can't be 100% controlled because of the basement's stairway which is open to the above floor which has an almost 1-1 ratio of window space to wall space. Both the projector and screen should provide full-time ambient-light viewing along with very good
(but not the very best) resolution and viewing for movie-night movies.
I did have a recent experience with my upstairs home theater area which houses a Sony 85" TV, Marantz AVP, Aragon 7-channel amp, & Martin Logan speakers. I went from using a FireTV Cube to stream HBO Max, to using another DIY PC. The sound quality substantially increased and the picture improved. This got me to thinking of re-purposing the 2nd. (older) DIY PC for the basement home theater that I discussed in this thread. The PC that just provided the sonic upgrade is using Intel's on-board graphics. This was an interesting and somewhat surprising finding for me. I wonder if this finding would transfer to an Apple TV or a Nvida Shield Prom verses my PC?