Oh yeah. I did that prime at 3 gbs in. The higher I run my RAM the more vtt I have to feed it. I think on the DFI, to run the RAM at 2000 I need almost 1.39v vtt. I can't verify that personally but cstkl1 over at i4memory has done some extensive RAM testing on the DFI and came up with that.
http://i4memory.com/f83/kingston-hyperx-testing-17413/
Once I get everything situated, benches complete on the Classy, less work in my personal life, I plan on finding a nice lil overclocked setting for my cpu and ram. I would like to get my ram around 2000 mhz. Prolly cpu at 4.2ghz. My new set of ram is 6gb's.