I recently ugraded to 3 4K monitors (Dell P2815Q's) and have crossfire 290's. I can't seem to get all 3 monitors to work with the connectors supplied.. There are 2 DVI and 1 DP and 1 HDMI. The DVI's do not seem to work with any of the cables I've tried (DVI to DP, and DVI to HDMI) While I'm not interested in gaming with these screens outside of Diablo 3 in a window @ 30hz I do want all 3 screens to work for spreadsheets etc.. The DP and HDMI work fine to drive 2 of the 3 screens but that last screen I'm unsure of how to get it to work.
Is it simply not possible with these cards? odd since my old 7970 could do it easy with 2 Mini DP and one HDMI.