[Nick Folkmann]

I just did some work on a Mac Pro 1,1. I took the old x1900 and put in a pc flashed Radeon HD 5770. I have a Samsung 4k Monitor that will do 3840 x 2160 at 60z. The graphics card I got has two dvi outputs,hdmi, and display port. Does anyone know what I need to do, to get this to drive the 4k monitor at 3840 x 2160 at least at 30hz? How do I have to connect the monitor up to get 4k resolutions? I have switch res x and have been messing with it a little but no luck. The monitor will come on by using the hdmi port on the back of the card to the hdmi on the monitor. When I plug in display port to display port it will try and turn on the monitor and shows a black screen but then eventually turns off again.