Hello, I wanna ask about GPU for 3 displays. I have HD 7850 and I wanna buy two more 22'' monitors. I realy can't decide if it's better to buy new HD 7850(or 7870) and put it to CrossFire or buy new better GPU like r9 290 or GTX 970(only one). I wanna play games like Skyrim, WOW, Crysis 3, FarCry 4 and more high end games like these. The resolution will be 5760x1080.