I am aware that the dual channel need identical memories so now all i talk is about oc and putting more banks like we all do on older mainboards.The intersting thing is single channell memories must be placed in the same way like dual channel.Now i occupied one channel (green slots).By putting them without respectiv the colours even in single channel the system don't boot.I think older rev are out of book specs.In the book and pirnted with white on mainboard is clear."Channel A" (Green). "Channel B" (Purple) but many said that for stability first green and purple slot must be ocupied in order to boot properly.Is a little confusing.In my opinion this was another problem on earlier rev.This problem is very confusing for begginers.