This is what happened to my ram. I was running memtest regularly and getting no errors, and at the time I had my 680i board so high MHz, low timings were a must. I ran them 950MHz 4-3-3-9 but needed 2.17v to do it, and even with active cooling this killed one of my cherished D9GKX sticks (still sitting on my desk).

I'm never putting more than 2.1v though my current set, but to be honest D9GKX is wasted in my current rig because it's doing 1076MHz cas5 lol. Maybe I should go 5-4-4-12 or something more "D9-ish"