More than 4 textures causing memory failure

I have a scene i baked and there are 27 objects and each object has a 1024x1024 texture, I have 2x GTX 780 ti 3GB Video Cards, when I load anymore than 4 textures into the scene other textures turn pink possibly indicating that there is not enough memory… why is a 3GB video card failing to load more than 4 1024x1024 textures??

Cycles can only use 5 float textures in GPU mode. And int16 textures get loaded as float. Sounds like that may be your issue? Does the problem still happen in CPU mode?

In CPU mode everything renders fine, I have 8GB system Ram, what are int16 textures?