Radeon 7950 3 monitors

Hello,
I am having a strange issue with my new setup. I ordered 3 identical monitors asus ve248q. They support display port and hdmi. I have a saphire hd 7950, im running 2 mini-display adapters to display port on 2 of the monitors. The third monitor is cropping when running either straight hdmi or dvi to hdmi cables. If i hook my old 24'' acer up dvi to dvi there is no cropping. What could be causing the cropping on my 3rd monitor?