You guys running reference style 1070s and mentioning 1400-1600 mem OC is this with only Samsung memory?  I cant seem to go much beyond 1150 on 5 MSI AERO cards with Micron memory which gets me about 30.1 MH/s.  Funny thing is on my desktop with an EVEGA SC 1070 with Micron memory I was able to push it higher in Afterburner and break over 32 MH/s.  It is now being used as my primary with 3 monitors so I dialed it back to 30.3 MH/s to keep from getting memory artifact.  Right now I am running 0 / 1200 in Genoil v17.  Seems to be holding.  I also havent noticed any improvement in core oc other than some slight improvements with 1060s in Windows using Claymore.  nvOC v17 is my first experience with Genoil.  Seems to be running good and the total hashrate seems to be higher.  But I miss seeing the individual card hash rate.  

Edit: I really wish I was smarter in Linux and was able to figure out how to overclock my gtx 970.  Its running in nvOC around 18.5 MH/s and I feel like I am giving up around 4 MH/s while pulling the most power of any GPU I have including the 1070s