So this workstation is finally built with the exception of the video cards.
I would like a video card that would allow me to use to the 6 panels independently most of the time but I would like to be able to use Eyefinity 6 occasionally.
I thought I had decided on 2 of the SAPPHIRE NITRO Radeon R9 390X 8GB cards in crossfire. I was under the misimpression that I could connect 3 panels to each card. Then I realized that Eyefinity requires all panels to be connected to a single card. So if you want to use Eyefinity 6 with this card you would have to use a DisplayPort hub.
The problem is that I will have six panels. Five of them are 4k panels. If I use a DisplayPort hub, I would be limited to less than 1080p because of bandwidth limitations of the MST signal as follows:
RESOLUTION...................MAXIMUM # of DISPLAYS
1680 x 1050 (WSXGA)........5
1920 x 1080 (1080p)..........4
2560 x 1600 (WQXGA).......2
4k or 2k...............................1
What am I missing? Even with two high end R9 390x video cards in crossfire (or four for that matter), I would be unable to use Eyefinity on 6 panels at even 1080p, let alone 2k or 4k? If I forget about Eyefinity, I can connect six panels to the two cards without issue, but will have to give up using all the displays as a single large eyefinity display?