Matrox MX02 with HP Dreamcolor monitor

I am looking into buying an HP Dreamcolor LP2480 monitor for my editing/color grading system. I work in commercials and music videos and have an entirely digital workflow (ingesting from Canon 7D and Red). I use Adobe Premiere CS5 to edit and After Effects/Magic Bullet to color grade.

My question is, do I need a Matrox MX02 or a similar I/O card for this monitor to output correct BT.709 color space? After researching for days I still cannot find a straight answer. Without the box I would be outputting from a GTX570 over HDMI.

Thanks so much!