I never understood why to collect so many video cards on one farm and why install video cards so close to each other. This is all done with one goal only - to show everyone that you have a big dick farm . If we talk about practical application, then 98 out of 100 miners will not do this.
There are a lot of things to consider.
1) Maximizing single machine to take advantage of the ASUS, Biostar or ASROCK boards which all support 11-14 GPUs (dependent which board), where you have a single CPU/Memory cost per rig.
2) While not always practical, our farm mostly has 7-8GPU rigs on the B250 vs running them up to 14, however we had not visited this since the RX 470's series, so why not try it.
3) I have been trying to provide content to this community since 2013, it's not about showing off, its about enabling more people on how to do it and what our experiences were, including in this video. Showing off would be just taking some B roll of if, saying hey look at this with no other time spent showing you exactly how we hooked it up.
Maybe this video will show it can be done if someone runs into 14gpus and wanted to put it all on one rig.