For what it's worth, I've been using a Corsair AX760 (80+ Platinum) with a i5-6600 and a GTX 1070 in a Thermltake V31 case (stock fans) for a couple of years no

For what it's worth, I've been using a Corsair AX760 (80+ Platinum) with a i5-6600 and a GTX 1070 in a Thermltake V31 case (stock fans) for a couple of years now and I don't think I've ever heard/seen the fan spin up, even under load while gaming in the Southern California summer heat.