ZEC? I was able to do 790 but that was really pushing my FE card. If I overvolted I could easily push 2100MHz+.
Keep in mind this is under water though.
I was watching my new Aorus run 2050Mhz consistantly earlier today, on air and with only a +150 core overclock in Afterburner - I'm pretty sure I could push it a good bit harder as it was only running 69-70C in an 80F ambient at 79-80% fan but I've not had time to play with it much yet.
Dang thing is a 3 slot card though (forget those sites claiming 2.5 slots, they're WRONG) - good thing I was planning on that rig to be a 2-card rig (I got one of the Gigabyte 3-fan Windforce models to go with it, but 20/20 hindsight I probably should have gotten a second Aorus).
News about the P106-100 is kinda old, and the June 23 date appears to be wrong (they've STILL not been seen in the wild in quantity, except perhaps as bulk-buys by large farms).
RX 470 mining-specific cards are kinda up in the air, Newegg has had them listed for a week and some now but I've not seen anyone state they've actually RECEIVED one that they ordered yet - and the initial $250-$270 price doesn't look like it's going to actually happen as the only one they have listed as "in stock" right now is through a 3'd party seller at well over $500.
On the plus side, GTX 1070 availability seems to be easing some, and a FEW cards are now available in the under-$500 range as of 10 minutes or so ago.