You could be right it could be my chip i can hit 1690, but 1 mgz over and it dont matter how much voltage i add it wont go, but i see so many people doing 1800, i know its not easy to do 1800, but im not sure what it is, going to try another board and that will tell the story. I did raise my cas to 7 and 8 just to try and see if 6 was a no go, but it didnt matter.