I totally screwed-up, and didn't think Gene + LGA 2011, anytime I see Gene I think LGA 1155.
So yes, the DDR3-1866 should be fine on ANY SB-E.
Okay, now that my heads screwed on, I appreciate the Vengeance but know they don't OC much if any above their Rated specs. So otherwise if you have no plans to OC then with the Vengeance use the AI OC -> XMP and Profile1.
However, IF you plan on OC'ing the i7-3820 which can be done with CPU Strap -> 125MHz then know that 'DDR3-1866 is no longer an option and I'd instead look at DDR3-2000 or DDR3-2133 with a slight under-clock.
With a CPU Strap of say 125MHz: DDR3-1666, DDR3-2000, DDR3-2333 so keep those numbers in mind.
thank you so much, my pc kept crashing and saying OC failed now I have the dram at 1600mhz thanks so much whoooo