Using evga precision ox
Mine have Micron memory, at +300 it shows terrible artifacts, but works fine at +200 - i see no reason to try and find that sweet spot between +200 and +300 since it will make no noticable difference.. To be honest i was expecting to get samsung memory, but lots of "premium" models are coming with micron that barely holds itself.
Core on the other hand, works +130, getting 2125-2134 with boost.. Gotta test it some more before i claim these clocks perfectly stable, but anything above that just crashes.
I've managed to play few Battlefield 1 rounds, ultra settings, 1440p, around 100fps with no crashes.
What i find strange - power limit doesn't seem to do a thing, it keeps at 90% tops.
upd: been playing games all evening, it just sits at 2139 1.094v.. throttles to 2126 if temperature rises above 71 or so. I've set up the fan curve so fans are spinning to 60% if temp reaches 60c, i can barely hear it anyway and it helps to keep that 2139 stable with no throttles.
I am not using K-boost, but the only downside i have - card cant enter idle-mode by itself, after playing a game i must restart my PC and not start precision tool in order to make it use idle clocks.