I spend only $300 for Mac Pro, RAM, SSD, CPUs, and USB Port so Im really happy about it. But I should have better graphic card cause I have dual 2k monitors. GTX 1000 series would be the great choice but they are not supported yet. 700 series seem to require more power than 900, 1000 series and have only one DP 1.2. I need at least two. Any recommendation?