1080's have a tiny bit better than 1070 Ti's?
If you aim for max efficiency, 1070 ti will at least match and usually beat 1080 hashrate in the 100-110 watt power range at the same power usage.
This depends on the card model and sometimes the specific card, I've only seen ONE match situation on "same model" cards, my Zotac Mini 1080 vs my Zotac Mini 1070 ti - but that's a case of the 1080 Mini I have being THE BEST 1080 I have in that power range by a bit.
If you push for higher hashrates at the cost of efficiency, the 1080 starts outhashing the 1070 ti typically around 120-125 watt level but never outhashes a same-model 1070 ti by the common 10% cost differential, presuming same power level on each card.
*IF* you can get a "same model" 1080 for the same price or within 2-3 % of a 1070ti, it's probably worth doing IMO - otherwise no.
if you don't mind refurbished and are looking for a hybrid evga
the 1080 hybrid is 549
https://www.evga.com/products/product.aspx?pn=08G-P4-6188-RXthe 1070 ti hybrid is 529
https://www.evga.com/products/product.aspx?pn=08G-P4-5678-KRconsidering that it should pay off in well under a year the refurbished 1080 may be the better deal.
ZCL has jumped from 60 usd to 124 usd.
This has pulled my nicehash zec mining up a lot overnight I should reach my 0.10 payout on Sunday morning.
https://www.nicehash.com/miner/16yLHLoeyuCLPMXkVpC3gyrRYvwRGwjKJrI look at the monthly projections for all my cards on the one address and it is 0.628 btc or about 9118 a month
This does not count my 4x s-9's which earn about 0.25 btc a month
total of 0.88 btc a month = damn! I just don't believe it.