I'm still extremely underwhelmed by the factory OC speeds that have been announced so far... No one bothers with memory (even though that should produce less heat than core), and in general everyone is extremely careful. They don't mind throwing on additional power connectors and power phases, but no significant OC that you couldn't get from the most basic design anyway.
http://videocardz.com/60496/custom-geforce-gtx-1080-roundup
Newegg had the Gigabyte G1 this AM which sold out already. Stated limited quantity of 100 in the email.
1860MHz boost in OC mode is all it had. Looks like single 8pin though.
http://www.newegg.com/Product/Produ..._mmc=EMC-GD060816-_-index-_-Item-_-14-125-869