low profile 6-monitor video card?

I am not sure I can help with something like video for 6 video cards, but there is something like you need https://multimonitorcomputer.com/top-4-best-videocard-for-multiple-monitor-computers.php there are for sure for four and less, maybe something will be in help.

 

Oh no. The same person with multiple nicks keep on reviving old hardware threads

 

You mean 6 x 1080P monitors? How about 2 x 4k monitors. That's the same as 8 x 1080p .