Got my new 1070 on Tuesday, upgraded from an R9 290. The 290 used to coil whine just a little bit when at 100% load, it was completely bearable though and it didn't bother me.
I installed my 1070 and in firing up some games with unlocked framerates and benchmarks I noticed terrible terrible coil whine, like really really loud. Both high pitched and low pitches. I could her in the other room.
So enter trying to resolve the problem and research. I've been researching this for days now and I've read tons of threads on it and I know about all to possible solutions, so don't try and help out in that regard because nothing will work I bought a new EVGA g2 power supply to try and see if my old PSU was causing the issue due to my 290 whining. No dice, I've tried burning the card in over night running benchmarks, no dice. I've tried underclocking and overclocking with no dice.
After googling this constantly and getting a headache, I've discovered this is actually a big issue with the Pascal ACX cooled cards from EVGA and tons of other owners are having the same issue. Some people have RMA'd up to 3 times and each time they get a card with coil whine. This issue also goes back the ACX 970 cards.
I'm fed up with it, I'm not going to RMA the card because I don't want to be without a GPU and then receive another whining card like the other owners.
I think I'm just going to return this card back to Jet.com and try and get an MSI or Asus Strix 1070.
If I google MSI or Asus strix 1070 coil whine I get far less results than EVGA.
Seems like EVGA has an issue this generation.