
maybe i spoke too quick about being able to help much ... all my mobos are intel chipsets.
From the little i have read, that is a pretty good mobo, and as long as you have the latest rev of the board you should get some oc with a quad on it. Rev 1 of the board had issues with quads i think, but evga was offering free upgrades. Some poeple just modded the boards themsselves but i expect most of us would take evga up on their offer. If you bought it recently new it is probably already at the right level.
Also, from my limited reading, oc'ing the 680i mobos takes quite a bit more work to get all the extra settings right.
Unless someone here has some experience with it to help out i suggest trying to finding some threads here or elsewhere on some successful oc's with it.
Despite my lack of help, i am still pretty sure you should be able to get to 3 + with it, but it may take some work.