I've just got a pair of Dell Ultrasharp U2415 monitors for my Mac Mini Server 2010 running OS X Mavericks 10.9.5. I'm using mDP feed to one @ 1920 x 1200, and a HDMI feed to the other @ 1920 x 1200. The display looks good, not blurred. However, both monitors are recognised as TVs in the system report for displays. The mDP fed monitor is using RBG and the HDMI is using YPbPr colourspace. Is there a way to get them recognised as monitors, and use the same colour definition?