The circled area is the backside of the 4pin fan connection on my graphics card. On the other side there is also a small amount of brown burning around the connector. The card still runs, the fan still spins, but I'm guessing that it will probably become an issue eventually, and I'll be RMAing it as one of my RAM sticks just died anyways. That area is pretty close to the southbridge heatsink on a 680i but I doubt that has much to do with it.
Any thoughts on what could have caused this burning?