GTX TITAN Z

GTX TITAN Z's are only $1500 now on NewEgg. Is any one using one or more of these successfully in a Mac Pro 5,1 GPU Expanssion system in Mavericks? Still looking for a Multiple GPU solution workaround for the 2 GPU limitation in osx 10.9.5.

Sounds like one card loads as 2 individual titan cards. Cost effective dual titan black solution on one card, but still not the mavericks 2+ GPU workaround I was hoping for.