I received mine a while back, but I had a problem with my motherboard. Just got back my RMA motherboard. So far this ram seems pretty good. Much better than either one of my Kingston hyper x's.
I have 8 hour prime stable at 2110 Mhz 1.65v 8-8-7-24

I need to do a lot more testing, but initial result. 2200 mhz 1.65 V