Quoted from WCCF(not the paragon of reliability)
"The issue affects EVGA’s entire range of Nvidia GeForce GTX 1080 and GTX 1070 cards equipped with the ACX cooler, all of which lack direct VRM cooling. This includes GTX 1080 & 1070 ACX, SC, FTW & FTW DT models. Essentially all dual fan models except the Classified."