Looking at building a PC, Would like to be able to use my iMac (late 2010) as a monitor for it. I know the iMac will display content from a GPU that has a Mini-DP out, What about a GPU with Just regular DisplayPort? Not sure if a Displayport>Mini-DP Cable will work, anyone know? I'm considering buying an nVidia GTX 670 but it only has DisplayPort, not Mini-DP. Thanks in advance.