Originally Posted by Vi0lence
sorry for the late reply been stuck in a nightmare sandy left behind. im on the jersey coast.
i have 2x8gb sticks of 1866 dominator platinum. tried timing up into the 12's on the cas and so on and nothing. kept getting errors ect. just was not stable. didnt up the voltages to much. got to 1.550 and didnt know about going any further.
What you should probably do is set your ram back to default, and lower your Dram voltage a little bit at a time. Raise your VCCIO voltage if you need to. Keep lowering your dram voltage until it simply won't post or it comes up with a crap ton of errors.
That margin that you lowered it by can be your new voltage surplus when you move up to a higher speed.
Personally, I wouldn't be surprised if you can't OC your ram at all. Most times you are lucky to get your ram to run at the rated speeds anyways.
If I were you with your chip and mobo, you might want to think about lowering the timings at 1866 and see if you can't push out some extra performance that way, but first we need to know what kind of voltage surplus you have at your disposal.