How Many Displays can 5k iMac Push?

[dsa420]

How many displays can 5k iMac push? Purchased one today and learned this:

1. Can't push (2) additional 4k monitors only 1.

2. Cant seem to push 27" Thunderbolt display + 4K either.

3. Was able to get it to push a 720p display for a second, but wasnt able to get to do it consistently.

Sorry if this has already been covered, but is 1 additional monitor all this guy can push?

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Perhaps can run 2 (27) thunderbolts and no 4k monitor... Think the 4k montior is killing the equation.

 

[dsa420]

Appears 2 is the Max or 1 4K.

 

[edjrwinnt]

I got my retina iMac with the 2 Gig Video card pushing a Dell 28" 4K AND a HP 1920 x 1200 screen. Both LCD's using the thunderbolt connections on the retina iMac.