Quote Originally Posted by samsc View Post
You have to use active dual link adaptors
Which usually means they need to be the powered types

I think display port triple and dual heads to go might work as well

Some people have also tested x4s with 4k outputs

Also there are only 3 output thunderbolt buses- they are paired up- so output monitors in some configurations need to be set up to take account of this
Using Dual Link DVI - I was able too get 5 (1920 x 1080) outputs on the Basic New Mac pro. 1 was a thunderbolt monitor and the other 4 were Dual Link DVI.

I would post a screen grab - but can't seems to work out how to do this