OS X Extended Desktop Limits

I am looking for information on whether there is a limit to the width/height of the OS X extended desktop. I have seen setups with 2 rows of 3 displays, resulting in a 7680 x 2880 desktop.

Now I would like to connect six 1080p displays to a 2013 MacPro. I need the OS X desktop to span these in a single row for an effective resolution of 11520 by 1080 pixels.

Does anybody know, if this is possible?