any advantage switching to mini displayport from DVI-D?

[Slam]

I run a Dell U2312HM (1920x1080) and Dell U2412M (1920x1200) through DVI-D cables.
I see that many new graphics cards have just one DVI output and 2 mini displayports. Is there any advantage to switching both to displayport? If not, then I'll just change over one monitor.

 

[Will_3rd]

Displayport has more bandwidth and so can support higher resolutions then single link DVI and you can daisy chain displays off one cable.

As you are running 1920x1080/1200 (max supported by single link DVI) there is not really any benefit to changing cables/ports.