I'm working on an installation that requires 7 outputs (6 Projectors @ 1920x1080 +1 monitor). System specs: MSI X99A SLI (quad), Intel Core i7-5820K Haswell-E 6-Core 3.3 GHz, 128 GB DDR5, 512 GB M.2 Gen 3 X4 (samsung 950 pro). I'm looking to upgrade the video card. I'm currently using the ATI HD 78...