Memory is not stable with XMP enabled!

Hi, my G-Skill Ripjaws 1866 ram wont run at its xmp profile stable!

As soon as I start playing a game it crashes

Its fine at 1600 with tighter timings

I wonder if I have a bad stick??

Have you got the voltage up high enough?

This happens on the 2133mhz ripjaws in my sabertooth x79 too. Tuned them to 2000mhz but 2133 X.m.p crashes every single time even with the cpu at stock. Surely X.M.P sets the correct voltage what should it be for ddr3 ripjaws on a x79 board?

I have tried a slight voltage increase but it still does it.

XMP is 1.5v

I also have an X79 - ASRock Extreme-4m with 16GB Crucial Ballistix at 1866 quad-channel.
I set XMP, but still had to bump one of the voltages up... I've actually forgotten which one, but it was with one of the more knowledgable forum members on the phone at the time... I *think* it was the VTT voltage, as it only needed bumping up by 0.02 or so.
Dammit - Sorry, getting old, memory going... no pun intended.

I'm also having problems with xmp. I couldn't get my memory to pass aida64 With it enabled as of yet even with default settings.....