Hi. I also run a 7950 on my (2012) Mac Pro 5,1 and would like to run three monitors (Apple LED Cinema Displays; I already have two (not the later Thunderbolt ones)).
Would you mind telling me how you have the monitors hooked up to your 7950? My AMD Radeon has 2 mini DP ports that I’m using now, plus a DVI-DL and (I think) a HDMI port.
Thanks!
willem