Connecting a displayport monitor to my Mac Mini (late 2012) using the Thunderbolt port what is the max resolution? I have a 27" ASUS PB278Q display equipped with a display port, the monitor has a resolution of 2560x1440. 
If I connect to my thunderbolt port using a mini displayport to displayport cable will it maintain the ultra hi-res of 2560x1440 which is what Apple claims Thunderbolt can produce?
I have a 27" ASUS PB278Q connected to a late 2012 mac mini using a mini displayport to displayport cable, and it is stunning!

I tried HDMI and DVI but neither of these solutions worked past 1080p.